https://www.math.wisc.edu/wiki/api.php?action=feedcontributions&user=Nagreen&feedformat=atomUW-Math Wiki - User contributions [en]2020-02-19T12:35:27ZUser contributionsMediaWiki 1.30.1https://www.math.wisc.edu/wiki/index.php?title=AMS_Student_Chapter_Seminar&diff=19032AMS Student Chapter Seminar2020-02-14T19:08:46Z<p>Nagreen: </p>
<hr />
<div>The AMS Student Chapter Seminar (aka Donut Seminar) is an informal, graduate student seminar on a wide range of mathematical topics. Pastries (usually donuts) will be provided.<br />
<br />
* '''When:''' Wednesdays, 3:20 PM – 3:50 PM<br />
* '''Where:''' Van Vleck, 9th floor lounge (unless otherwise announced)<br />
* '''Organizers:''' [https://www.math.wisc.edu/~malexis/ Michel Alexis], [https://www.math.wisc.edu/~drwagner/ David Wagner], [http://www.math.wisc.edu/~nicodemus/ Patrick Nicodemus], [http://www.math.wisc.edu/~thaison/ Son Tu], Carrie Chen<br />
<br />
Everyone is welcome to give a talk. To sign up, please contact one of the organizers with a title and abstract. Talks are 25 minutes long and should avoid assuming significant mathematical background beyond first-year graduate courses.<br />
<br />
The schedule of talks from past semesters can be found [[AMS Student Chapter Seminar, previous semesters|here]].<br />
<br />
== Spring 2020 ==<br />
<br />
=== February 5, Alex Mine===<br />
<br />
Title: Khinchin's Constant<br />
<br />
Abstract: I'll talk about a really weird fact about continued fractions.<br />
<br />
=== February 12, Xiao Shen===<br />
<br />
Title: Coalescence estimates for the corner growth model with exponential weights<br />
<br />
Abstract: (Joint with Timo Seppalainen) I will talk about estimates for the coalescence time of semi-infinite directed geodesics in the planar corner growth model. Not much probability background is needed.<br />
<br />
=== February 19, Hyun Jong Kim===<br />
<br />
Title: Orbifolds for Music<br />
<br />
Abstract: TBD<br />
<br />
=== February 26, Solly Parenti===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== March 4, ===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== March 11, Ivan Aidun===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== March 24 - Visit Day===<br />
<br />
==== Brandon Boggess, Time TBD====<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
==== Yandi Wu, Time TBD====<br />
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Title: TBD<br />
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<br />
=== April 1, Ying Li===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== April 8, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== April 15, TBD===<br />
<br />
Title: TBD<br />
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Abstract: TBD<br />
<br />
=== April 22, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
== Fall 2019 ==<br />
<br />
=== October 9, Brandon Boggess===<br />
<br />
Title: An Application of Elliptic Curves to the Theory of Internet Memes<br />
<br />
Abstract: Solve polynomial equations with this one weird trick! Math teachers hate him!!!<br />
<br />
[[File:Thumbnail fruit meme.png]]<br />
<br />
=== October 16, Jiaxin Jin===<br />
<br />
Title: Persistence and global stability for biochemical reaction-diffusion systems<br />
<br />
Abstract: The investigation of the dynamics of solutions of nonlinear reaction-diffusion PDE systems generated by biochemical networks is a great challenge; in general, even the existence of classical solutions is difficult to establish. On the other hand, these kinds of problems appear very often in biological applications, e.g., when trying to understand the role of spatial inhomogeneities in living cells. We discuss the persistence and global stability properties of special classes of such systems, under additional assumptions such as: low number of species, complex balance or weak reversibility.<br />
<br />
=== October 23, Erika Pirnes===<br />
<br />
(special edition: carrot seminar)<br />
<br />
Title: Why do ice hockey players fall in love with mathematicians? (Behavior of certain number string sequences)<br />
<br />
Abstract: Starting with some string of digits 0-9, add the adjacent numbers pairwise to obtain a new string. Whenever the sum is 10 or greater, separate its digits. For example, 26621 would become 81283 and then 931011. Repeating this process with different inputs gives varying behavior. In some cases the process terminates (becomes a single digit), or ends up in a loop, like 999, 1818, 999... The length of the strings can also start growing very fast. I'll discuss some data and conjectures about classifying the behavior.<br />
<br />
=== October 30, Yunbai Cao===<br />
<br />
Title: Kinetic theory in bounded domains<br />
<br />
Abstract: In 1900, David Hilbert outlined 23 important problems in the International Congress of Mathematics. One of them is the Hilbert's sixth problem which asks the mathematical linkage between the mechanics from microscopic view and the macroscopic view. A relative new mesoscopic point of view at that time which is "kinetic theory" was highlighted by Hilbert as the bridge to link the two. In this talk, I will talk about the history and basic elements of kinetic theory and Boltzmann equation, and the role boundary plays for such a system, as well as briefly mention some recent progress.<br />
<br />
=== November 6, Tung Nguyen===<br />
<br />
Title: Introduction to Chemical Reaction Network<br />
<br />
Abstract: Reaction network models are often used to investigate the dynamics of different species from various branches of chemistry, biology and ecology. The study of reaction network has grown significantly and involves a wide range of mathematics and applications. In this talk, I aim to show a big picture of what is happening in reaction network theory. I will first introduce the basic dynamical models for reaction network: the deterministic and stochastic models. Then, I will mention some big questions of interest, and the mathematical tools that are used by people in the field. Finally, I will make connection between reaction network and other branches of mathematics such as PDE, control theory, and random graph theory.<br />
<br />
=== November 13, Jane Davis===<br />
<br />
Title: Brownian Minions<br />
<br />
Abstract: Having lots of small minions help you perform a task is often very effective. For example, if you need to grade a large stack of calculus problems, it is effective to have several TAs grade parts of the pile for you. We'll talk about how we can use random motions as minions to help us perform mathematical tasks. Typically, this mathematical task would be optimization, but we'll reframe a little bit and focus on art and beauty instead. We'll also try to talk about the so-called "storytelling metric," which is relevant here. There will be pictures and animations! 🎉<br />
<br />
Sneak preview: some modern art generated with MATLAB.<br />
<br />
[[File:Picpic.jpg]]<br />
<br />
=== November 20, Colin Crowley===<br />
<br />
Title: Matroid Bingo<br />
<br />
Abstract: Matroids are combinatorial objects that generalize graphs and matrices. The famous combinatorialist Gian Carlo Rota once said that "anyone who has worked with matroids has come away with the conviction that matroids are one of the richest and most useful ideas of our day." Although his day was in the 60s and 70s, matroids remain an active area of current research with connections to areas such as algebraic geometry, tropical geometry, and parts of computer science. Since this is a doughnut talk, I will introduce matroids in a cute way that involves playing bingo, and then I'll show you some cool examples.<br />
<br />
=== December 4, Xiaocheng Li===<br />
<br />
Title: The method of stationary phase and Duistermaat-Heckman formula<br />
<br />
Abstract: The oscillatory integral $\int_X e^{itf(x)}\mu=:I(t), t\in \mathbb{R}$ is a fundamental object in analysis. In general, $I(t)$ seldom has an explicit expression as Fourier transform is usually inexplicit. In practice, we are interested in the asymptotic behavior of $I(t)$, that is, for $|t|$ very large. A classical tool of getting an approximation is the method of stationary phase which gives the leading term of $I(t)$. Furthermore, there are rare instances for which the approximation coincides with the exact value of $I(t)$. One example is the Duistermaat-Heckman formula in which the Hamiltonian action and the momentum map are addressed. In the talk, I will start with basic facts in Fourier analysis, then discuss the method of stationary phase and the Duistermaat-Heckman formula.<br />
<br />
=== December 11, Chaojie Yuan===<br />
<br />
Title: Coupling and its application in stochastic chemical reaction network<br />
<br />
Abstract: Stochastic models for chemical reaction networks have become increasingly popular in the past few decades. When the molecules are present in low numbers, the chemical system always displays randomness in their dynamics, and the randomness cannot be ignored as it can have a significant effect on the overall properties of the dynamics. In this talk, I will introduce the stochastic models utilized in the context of biological interaction network. Then I will discuss coupling in this context, and illustrate through examples how coupling methods can be utilized for numerical simulations. Specifically, I will introduce two biological models, which attempts to address the behavior of interesting real-world phenomenon.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=19026Analysis Seminar2020-02-14T15:31:47Z<p>Nagreen: /* Analysis Seminar Schedule */</p>
<hr />
<div>'''Fall 2019 and Spring 2020 Analysis Seminar Series<br />
'''<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 10<br />
| José Madrid<br />
| UCLA<br />
|[[#José Madrid | On the regularity of maximal operators on Sobolev Spaces ]]<br />
| Andreas, David<br />
|-<br />
|Sept 13 (Friday, B139)<br />
| Yakun Xi<br />
| University of Rochester<br />
|[[#Yakun Xi | Distance sets on Riemannian surfaces and microlocal decoupling inequalities ]]<br />
| Shaoming<br />
|-<br />
|Sept 17<br />
| Joris Roos<br />
| UW Madison<br />
|[[#Joris Roos | L^p improving estimates for maximal spherical averages ]]<br />
| Brian<br />
|-<br />
|Sept 20 (2:25 PM Friday, Room B139 VV)<br />
| Xiaojun Huang<br />
| Rutgers University–New Brunswick<br />
|[[#linktoabstract | A generalized Kerner theorem and hyperbolic metrics on Stein spaces with compact spherical boundaries ]]<br />
| Xianghong<br />
|-<br />
|Oct 1<br />
| Xiaocheng Li<br />
| UW Madison<br />
|[[#Xiaocheng Li | An Estimate for Spherical Functions on $\mathrm{SL}(3,\mathbb{R})$ ]]<br />
| Simon<br />
|-<br />
|Oct 8<br />
| Jeff Galkowski<br />
| Northeastern University<br />
|[[#Jeff Galkowski | Concentration and Growth of Laplace Eigenfunctions ]]<br />
| Betsy<br />
|-<br />
|Oct 15<br />
| David Beltran<br />
| UW Madison<br />
|[[#David Beltran | Regularity of the centered fractional maximal function ]]<br />
| Brian<br />
|-<br />
|Oct 22<br />
| Laurent Stolovitch<br />
| University of Côte d'Azur<br />
|[[#Laurent Stolovitch | Linearization of neighborhoods of embeddings of complex compact manifolds ]]<br />
| Xianghong<br />
|-<br />
|<b>Wednesday Oct 23 in B129</b><br />
|Dominique Kemp<br />
|Indiana University<br />
|[[#Dominique Kemp | Decoupling for Real Analytic Surfaces Exhibiting Zero Curvature]]<br />
|Betsy<br />
|-<br />
|Oct 29<br />
| Bingyang Hu<br />
| UW Madison<br />
|[[#Bingyang Hu | Sparse bounds of singular Radon transforms]]<br />
| Street<br />
|-<br />
|Nov 5<br />
| Kevin O'Neill<br />
| UC Davis<br />
|[[#Kevin O'Neill | A Quantitative Stability Theorem for Convolution on the Heisenberg Group ]]<br />
| Betsy<br />
|-<br />
|Nov 12<br />
| Francesco di Plinio<br />
| Washington University in St. Louis<br />
|[[#Francesco di Plinio | Maximal directional integrals along algebraic and lacunary sets]]<br />
| Shaoming<br />
|-<br />
|Nov 13 (Wednesday)<br />
| Xiaochun Li <br />
| UIUC<br />
|[[#Xiaochun Li | Roth's type theorems on progressions]]<br />
| Brian, Shaoming<br />
|-<br />
|Nov 19<br />
| Joao Ramos<br />
| University of Bonn<br />
|[[#Joao Ramos | Fourier uncertainty principles, interpolation and uniqueness sets ]]<br />
| Joris, Shaoming<br />
|-<br />
|Jan 21<br />
| No Seminar<br />
| <br />
|<br />
|<br />
|-<br />
|Friday, Jan 31, 4 pm, B239, Colloquium<br />
| Lillian Pierce<br />
| Duke University<br />
|[[#Lillian Pierce | On Bourgain’s counterexample for the Schrödinger maximal function ]]<br />
| Andreas, Simon<br />
|-<br />
|Feb 4<br />
| Ruixiang Zhang<br />
| UW Madison<br />
|[[#Ruixiang Zhang | Local smoothing for the wave equation in 2+1 dimensions ]]<br />
| Andreas<br />
|-<br />
|Feb 11<br />
| Zane Li<br />
| Indiana University<br />
|[[#Zane Li | A bilinear proof of decoupling for the moment curve ]]<br />
| Betsy<br />
|-<br />
|Feb 18<br />
| Sergey Denisov<br />
| UW Madison<br />
|[[#linktoabstract | De Branges canonical systems with finite logarithmic integral ]]<br />
| Street<br />
|-<br />
|Feb 25<br />
| Michel Alexis<br />
| Local<br />
|[[#Michel Alexis | The Steklov problem for trigonometric polynomials orthogonal to a Muckenhoupt weight ]]<br />
| Denisov<br />
|-<br />
|Mar 3<br />
| William Green<br />
| Rose-Hulman Institute of Technology<br />
|[[#William Green | Dispersive estimates for the Dirac equation ]]<br />
| Betsy<br />
|-<br />
|Mar 10<br />
| Yifei Pan<br />
| Indiana University-Purdue University Fort Wayne<br />
|[[#linktoabstract | Title ]]<br />
| Xianghong<br />
|-<br />
|Mar 17<br />
| Spring Break!<br />
|<br />
|<br />
| <br />
|-<br />
|Mar 24<br />
| Oscar Dominguez<br />
| Universidad Complutense de Madrid<br />
|[[#linktoabstract | Title ]]<br />
| Andreas<br />
|-<br />
|Mar 31<br />
| Brian Street<br />
| University of Wisconsin-Madison<br />
|[[#linktoabstract | Title ]]<br />
| Local<br />
|-<br />
|Apr 7<br />
| Hong Wang<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Street<br />
|-<br />
|<b>Monday, Apr 13</b><br />
|Yumeng Ou<br />
|CUNY, Baruch College<br />
|[[#linktoabstract | TBA ]]<br />
|Zhang<br />
|-<br />
|Apr 14<br />
| Tamás Titkos<br />
| BBS University of Applied Sciences & Rényi Institute<br />
|[[#linktoabstract | Distance preserving maps on spaces of probability measures ]]<br />
| Street<br />
|-<br />
|Apr 21<br />
| Diogo Oliveira e Silva<br />
| University of Birmingham<br />
|[[#linktoabstract | Title ]]<br />
| Betsy<br />
|-<br />
|Apr 28<br />
| No Seminar<br />
|-<br />
|May 5<br />
|Jonathan Hickman<br />
|University of Edinburgh<br />
|[[#linktoabstract | Title ]]<br />
| Andreas<br />
|-<br />
|}<br />
<br />
=Abstracts=<br />
===José Madrid===<br />
<br />
Title: On the regularity of maximal operators on Sobolev Spaces<br />
<br />
Abstract: In this talk, we will discuss the regularity properties (boundedness and<br />
continuity) of the classical and fractional maximal<br />
operators when these act on the Sobolev space W^{1,p}(\R^n). We will<br />
focus on the endpoint case p=1. We will talk about<br />
some recent results and current open problems.<br />
<br />
===Yakun Xi===<br />
<br />
Title: Distance sets on Riemannian surfaces and microlocal decoupling inequalities <br />
<br />
Abstract: In this talk, we discuss the generalization of the Falconer distance problem to the Riemannian setting. In particular, we extend the recent result of Guth-Iosevich-Ou-Wang for the distance set in the plane to general Riemannian surfaces. The key new ingredient is a family of refined decoupling inequalities associated with phase functions that satisfy Carleson-Sj\”olin condition. This is joint work with Iosevich and Liu.<br />
<br />
===Joris Roos===<br />
<br />
Title: L^p improving estimates for maximal spherical averages<br />
<br />
Abstract: For a given compact set of radii $E$ we will discuss $L^p$ improving properties of maximal spherical averages with a supremum over $E$.<br />
Our results are sharp up to endpoints for a large class of $E$. A new feature is that the optimal exponents depend on both, the upper Minkowski dimension and the Assouad dimension of the set $E$.<br />
Joint work with Tess Anderson, Kevin Hughes and Andreas Seeger.<br />
<br />
<br />
<br />
===Joao Ramos===<br />
<br />
Title: Fourier uncertainty principles, interpolation and uniqueness sets<br />
<br />
Abstract: A classical result in the theory of entire functions of exponential type, Shannon’s interpolation formula predicates that, given a function whose Fourier transform vanishes outside the interval $[-1/2,1/2]$, it is possible to recover it from its values at the integers. More specifically, it holds, in a suitable sense of convergence, that <br />
<br />
$$ f(x) = \sum_{n \in \mathbb{Z}} f(n) \frac{\sin(\pi(x-n))}{\pi(x -n)}. $$ <br />
<br />
This formula is unfortunately unavailable for arbitrary Schwartz functions on the real line, but a recent result of Radchenko and Viazovska provides us with an explicit construction of an interpolation basis for even Schwartz functions. It states, in a nutshell, that we can recover explicitly the function given its values at the squares of roots of integers. <br />
<br />
We will discuss a bit these two results, and explore, in connection to classical Fourier uncertainty results, the question of determining which pairs of sets $(A,B)$ satisfy that, if a Schwartz function $f$ vanishes on A and its Fourier transform vanishes on B, then $f \equiv 0.$ <br />
<br />
In particular, we will give sufficient conditions on $(\alpha,\beta)$ pairs of positive numbers so that, if $f$ vanishes at $\pm n^{\alpha}$ and its Fourier transform vanishes at $\pm n^{\beta}$, then $f$ is identically zero.<br />
<br />
===Xiaojun Huang===<br />
<br />
Title: A generalized Kerner theorem and hyperbolic metrics on Stein spaces with compact spherical boundaries<br />
<br />
Abstract: This is a joint work with Ming Xiao. We discuss how to construct a hyperbolic metric over a Stein space with spherical boundary. The technique we use is to employ holomorphic continuation along curves for multiple valued functions.<br />
<br />
===Xiaocheng Li===<br />
<br />
Title: An Estimate for Spherical Functions on $\mathrm{SL}(3,\mathbb{R})$<br />
<br />
Abstract: We prove an estimate for spherical functions $\phi_\lambda(a)$ on $\mathrm{SL}(3,\mathbb{R})$, establishing uniform decay in the spectral parameter $\lambda$ when the group parameter $a$ is restricted to a compact subset of the abelian subgroup $\mathrm{A}$. In the case of $\mathrm{SL}(3,\mathbb{R})$, it improves a result by J.J. Duistermaat, J.A.C. Kolk and V.S. Varadarajan by removing the limitation that $a$ should remain regular. As in their work, we estimate the oscillatory integral that appears in the integral formula for spherical functions by the method of stationary phase. However, the major difference is that we investigate the stability of the singularities arising from the linearized phase function by classifying their local normal forms when the parameters $\lambda$ and $a$ vary.<br />
<br />
<br />
===Xiaochun Li===<br />
<br />
Title: Roth’s type theorems on progressions<br />
<br />
Abstract: The arithmetic progression problems were posed by Erd\”os-Turan, answered affirmatively by Semer\’edi. However, there are still many questions remained on precise quantitative description on how large a subset shall be in oredr to guarantee a progression in it. Involving with Fourier analysis, considerable work had been accomplished recently. We will give a survey on those progress, and report our recent progress on quantitative version of Roth’s type theorem on (polynomial) progressions of short length.<br />
<br />
===Jeff Galkowski===<br />
<br />
<b>Concentration and Growth of Laplace Eigenfunctions</b><br />
<br />
In this talk we will discuss a new approach to understanding eigenfunction concentration. We characterize the features that cause an eigenfunction to saturate the standard supremum bounds in terms of the distribution of L^2 mass along geodesic tubes emanating from a point. We also show that the phenomena behind extreme supremum norm growth is identical to that underlying extreme growth of eigenfunctions when averaged along submanifolds. Finally, we use these ideas to understand a variety of measures of concentration; in each case obtaining quantitative improvements over the known bounds.<br />
<br />
===David Beltran===<br />
<br />
Title: Regularity of the centered fractional maximal function<br />
<br />
Abstract: I will report some recent progress regarding the boundedness of the map $f \mapsto |\nabla M_\beta f|$ from the endpoint space $W^{1,1}(\mathbb{R}^d)$ to $L^{d/(d-\beta)}(\mathbb{R}^d)$, where $M_\beta$ denotes the fractional version of the centered Hardy--Littlewood maximal function. A key step in our analysis is a relation between the centered and non-centered fractional maximal functions at the derivative level, which allows to exploit the known techniques in the non-centered case.<br />
<br />
This is joint work with José Madrid.<br />
<br />
===Dominique Kemp===<br />
<br />
<b>Decoupling for Real Analytic Surfaces Exhibiting Zero Curvature</b><br />
<br />
The celebrated l^2 decoupling theorem of Jean Bourgain and Ciprian Demeter presented a new perspective on a range of problems related to hypersurfaces with nonzero Gaussian curvature, such as exponential sum estimates, additive energy estimates, local smoothing, and counting solutions to Diophantine inequalities. The same authors also extended their theory to the n-dimensional cone. Following their steps, we prove optimal l^2 decoupling results for the remaining class of zero-curvature two-dimensional surfaces without umbilical points (the so-called tangent surfaces). We are also able to prove a decoupling theorem for the real analytic surfaces of revolution. These results should be viewed as partial progress toward the goal of proving a decoupling theorem for arbitrary real analytic hypersurfaces.<br />
<br />
<br />
===Kevin O'Neill===<br />
<br />
<b>A Quantitative Stability Theorem for Convolution on the Heisenberg Group </b><br />
<br />
Although convolution on Euclidean space and the Heisenberg group satisfy the same $L^p$ bounds with the same optimal constants, the former has maximizers while the latter does not. However, as work of Christ has shown, it is still possible to characterize near-maximizers. Specifically, any near-maximizing triple of the trilinear form for convolution on the Heisenberg group must be close to a particular type of triple of ordered Gaussians after adjusting by symmetry. In this talk, we will use the expansion method to prove a quantitative version of this characterization.<br />
<br />
===Francesco di Plinio===<br />
<br />
<b>Maximal directional integrals along algebraic and lacunary sets </b><br />
<br />
I will discuss two recent results obtained in collaboration with (partly) Natalia Accomazzo and Ioannis Parissis (U Basque Country). The first is a sharp $L^2$ estimate for the maximal averaging operator associated to sets of directions from algebraic sets in R^n of arbitrary codimension. The proof uses a new scheme of polynomial partitioning on manifolds which extends ideas by Larry Guth. The second result is a sharp estimate in all dimensions for the maximal directional singular integrals along lacunary directions. This settles a question of Parcet and Rogers. The proof uses a combination of two-dimensional and $n$-dimensional coverings combining seemingly contrasting ideas of Parcet-Rogers and of Nagel-Stein-Wainger.<br />
<br />
===Laurent Stolovitch===<br />
<br />
<b>Linearization of neighborhoods of embeddings of complex compact manifolds </b><br />
<br />
In this work, we address the following question due to Grauert: if a neighborhood M of a holomorphically embedded complex compact manifold C is formally equivalent to another one, are two neighborhoods biholomorphically equivalent? We shall present the case where the other neighborhood is the neighborhood of the zero section of the normal bundle of C in M. The solution to this problem involves "small divisors problems". This is joint work with X. Gong.<br />
<br />
===Bingyang Hu===<br />
<br />
<b>Sparse bounds of singular Radon transforms</b><br />
<br />
In this talk, we will first briefly talk about the general theory of sparse domination, and then talk about the sparse bounds of singular Radon transforms, which strengths the $L^p$ boundedness of such operators due to Christ, Nagel, Stein and Wainger in 1999.<br />
<br />
===Lillian Pierce===<br />
<b> On Bourgain’s counterexample for the Schrödinger maximal function </b><br />
<br />
In 1980, Carleson asked a question in harmonic analysis: to which Sobolev space H^s must an initial data function belong, for a pointwise a.e. convergence result to hold for the solution to the associated linear Schrödinger equation? Over the next decades, many people developed counterexamples to push the (necessary) range of s up, and positive results to push the (sufficient) range of s down. Now, these ranges are finally meeting: Bourgain’s 2016 counterexample showed s < n/(2(n+1)) fails, and Du and Zhang’s 2019 paper shows that s>n/(2(n+1)) suffices. <br />
In this talk, we will give an overview of how to rigorously derive Bourgain’s 2016 counterexample, based on simple facts from number theory. We will show how to build Bourgain’s counterexample starting from “zero knowledge," and how to gradually optimize the set-up to arrive at the final counterexample. The talk will be broadly accessible, particularly if we live up to the claim of starting from “zero knowledge.”<br />
<br />
===Ruixiang Zhang===<br />
<br />
<b> Local smoothing for the wave equation in 2+1 dimensions </b><br />
<br />
Sogge's local smoothing conjecture for the wave equation predicts that the local L^p space-time estimate gains a fractional derivative of order almost 1/p compared to the fixed time L^p estimates, when p>2n/(n-1). Jointly with Larry Guth and Hong Wang, we recently proved the conjecture in $\mathbb{R}^{2+1}$. I will talk about a sharp square function estimate we proved which implies the local smoothing conjecture in dimensions 2+1. A key ingredient in the proof is an incidence type theorem.<br />
<br />
===Zane Li===<br />
<br />
<b> A bilinear proof of decoupling for the moment curve</b><br />
<br />
We give a proof of decoupling for the moment curve that is inspired from nested efficient congruencing. We also discuss the relationship between Wooley's nested efficient congruencing and Bourgain-Demeter-Guth's decoupling proofs of Vinogradov's Mean Value Theorem. This talk is based on joint work with Shaoming Guo, Po-Lam Yung, and Pavel Zorin-Kranich.<br />
<br />
<br />
===William Green===<br />
<br />
<b> Dispersive estimates for the Dirac equation </b><br />
<br />
The Dirac equation was derived by Dirac in 1928 to model the behavior of subatomic particles moving at relativistic speeds. Dirac formulated a hyberbolic system of partial differential equations<br />
That can be interpreted as a sort of square root of a system of Klein-Gordon equations.<br />
<br />
The Dirac equation is considerably less well studied than other dispersive equations such as the Schrodinger, wave or Klein-Gordon equations. We will survey recent work on time-decay estimates for the solution operator. Specifically the mapping properties of the solution operator between L^p spaces. As in other dispersive equations, the existence of eigenvalues and/or resonances at the edge of the continuous spectrum affects the dynamics of the solution. We classify the threshold eigenvalue and resonance structure in two and three spatial dimensions and study their effect on the time decay. The talk with survey joint works with B. Erdogan (Illinois), M. Goldberg (Cincinnati) and E. Toprak (Rutgers).<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18943Applied Algebra Seminar Spring 20202020-02-05T23:23:39Z<p>Nagreen: </p>
<hr />
<div>'''When''': 11:00am, Thursdays<br />
<br />
'''Where''': 901 Van Vleck Hall<br />
<br />
'''List''': mathaas@lists.wisc.edu, to join email join-mathaas@lists.wisc.edu<br />
<br />
'''Contact''': Shamgar Gurevich, Jose Rodriguez<br />
<br />
<br />
== Spring 2020 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18942Applied Algebra Seminar Spring 20202020-02-05T23:23:22Z<p>Nagreen: </p>
<hr />
<div>'''When''': 11:00am, Thursdays<br />
<br />
'''Where''': 901 Van Vleck Hall<br />
<br />
'''List''': mathaas@lists.wisc.edu<br />
<br />
'''Contact''': Shamgar Gurevich, Jose Rodriguez<br />
<br />
<br />
== Spring 2020 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18941Applied Algebra Seminar Spring 20202020-02-05T23:22:27Z<p>Nagreen: </p>
<hr />
<div>'''When''': 11:00am, Thursdays<br />
<br />
'''Where''': 901 Van Vleck Hall<br />
<br />
<br />
== Spring 2020 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18940Applied Algebra Seminar Spring 20202020-02-05T23:21:55Z<p>Nagreen: </p>
<hr />
<div>When: 11:00am, Thursdays<br />
<br />
Where: 901 Van Vleck Hall<br />
<br />
<br />
== Spring 2020 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18939Applied Algebra Seminar Spring 20202020-02-05T23:21:48Z<p>Nagreen: /* Spring 2020 Schedule */</p>
<hr />
<div>When: 11:00am, Thursdays<br />
Where: 901 Van Vleck Hall<br />
<br />
<br />
== Spring 2020 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied_Algebra_Seminar_Spring_2020&diff=18938Applied Algebra Seminar Spring 20202020-02-05T23:21:28Z<p>Nagreen: </p>
<hr />
<div>== Spring 2020 Schedule ==<br />
<br />
When: 11:00am, Thursdays<br />
Where: 901 Van Vleck Hall<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|February 20<br />
|[https://wid.wisc.edu/people/carla-michini/// Carla Michini (UW Madison)]<br />
|[[#Carla Michini|Short simplex paths in lattice polytopes]]<br />
|Local<br />
|-<br />
|February 27<br />
|<br />
| <br />
|-<br />
|March 5<br />
|<br />
| <br />
|-<br />
|March 12<br />
|<br />
| <br />
|-<br />
|March 19 <br />
|Spring Break<br />
| <br />
|-<br />
|March 26<br />
|<br />
| <br />
|-<br />
|April 2<br />
|<br />
| <br />
|-<br />
|April 9<br />
|<br />
| <br />
|-<br />
|April 16<br />
|<br />
| <br />
|-<br />
|April 23<br />
|<br />
| <br />
|-<br />
|}<br />
<br />
== Abstracts ==<br />
===Carla Michini===<br />
'''Short simplex paths in lattice polytopes<br />
'''<br />
<br />
We consider the problem of optimizing a linear function over a lattice polytope P contained in [0,k]^n and defined via m linear inequalities. We design a simplex algorithm that, given an initial vertex, reaches an optimal vertex by tracing a path along the edges of P of length at most O(n^6 k log k). The length of this path is independent on m and is the best possible up to a polynomial function, since it is only polynomially far from the worst case diameter. The number of arithmetic operations needed to compute the next vertex in the path is polynomial in n, m and log k. If k is polynomially bounded by n and m, the algorithm runs in strongly polynomial time. This is a joint work with Alberto Del Pia.<br />
<br />
----<br />
== Other events to note ==<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | event/title<br />
!align="left" | speaker<br />
|-<br />
|February 7<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Joe_Kileel_.28Princeton.29/// Talk: Inverse Problems, Imaging and Tensor Decomposition]<br />
|Joe Kileel (Princeton)<br />
|-<br />
|February 10<br />
|[https://www.math.wisc.edu/wiki/index.php/Colloquia#Cynthia_Vinzant_.28NCSU.29/// Talk: Matroids, log-concavity, and expanders ]<br />
|Cynthia Vinzant (NCSU)<br />
|-<br />
|}<br />
----</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=How_to_connect_to_our_servers_from_outside_of_Van_Vleck&diff=18853How to connect to our servers from outside of Van Vleck2020-01-31T17:17:47Z<p>Nagreen: </p>
<hr />
<div> <br />
Editing Using ssh (section)<br />
= Using ssh to Access Math Department Resources=<br />
<br />
The University of Wisconsin-Madison Department of Mathematics maintains two login servers for ssh connections from outside the department.<br />
<br />
# login0.math.wisc.edu: To connect to this server, you must have an IP address that corresponds to a wisc.edu host address. You can use the campus wireless[https://it.wisc.edu/services/wireless-uwnet/ | UWNet], [https://it.wisc.edu/services/wireless-eduroam/ | Eduroam], or [https://it.wisc.edu/services/wiscvpn/ | WiscVPN]. Other names for this server are bing.math.wisc.edu and login.math.wisc.edu.<br />
# login1.math.wisc.edu. To connect to this server, you must use an ssh key. For instructions on using an ssh key, see below. Another name for this server is abel.math.wisc.edu.<br />
<br />
To access Math Department resources via ssh, you must first use an ssh client to connect to either login0 or login1. You can then ssh to the system of your choice within the department.<br />
<br />
For example, suppose you wished to run a sage program on one of the research servers. For simplicity sake, the research servers have aliases (nicknames) magma0, magma1, ..., magma19, with the more powerful machines having the lowest numbers.<br />
<br />
To start your sage program, you might use an ssh client on your laptop to connect to login0.math.wisc.edu then run ssh again on login0 to connect to magma0. Please do not run research programs on login0 or login1. While these machines may have all the tools necessary to test programs, they are not powerful enough to handle more than the most trivial of tasks. If you run a program that uses a lot of resources on login0 or login1, you may prevent users (including yourself) from accessing these machines.<br />
===Generating an ssh Key===<br />
<br />
The IT staff recommends that you generate an ssh key to use when moving from one machine to another within the department network. Using an ssh key is both easier and more secure than retyping your password when you are moving from one Math Department machine to another. To use an ssh key, do the following.<br />
<br />
# Log onto any Linux workstation or research server in the department. You can use ssh as explained above to connect to login0 or login1 for this purpose.<br />
# At the prompt, type "ssh-keygen". Accept the default values. You need not enter a passphrase, so just press enter.<br />
# Add the key you just generated to your authorized_keys file. Type, "cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys"<br />
# To test, type, "ssh magma0". You should be connected to magma0 without having to retype your password.<br />
<br />
Note: The login server login1.math.wisc.edu requires the use of ssh keys to connect. You can use this same ssh key for that purpose. Instructions for doing so are different for each ssh client and are therefore beyond the scope of this document. Consult your client's documentation (or google) or ask a member of the IT staff for assistance.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=How_to_connect_to_our_servers_from_outside_of_Van_Vleck&diff=18852How to connect to our servers from outside of Van Vleck2020-01-31T17:16:49Z<p>Nagreen: /* Using ssh to Access Math Department Resources */</p>
<hr />
<div> <br />
Editing Using ssh (section)<br />
= Using ssh to Access Math Department Resources=<br />
<br />
The University of Wisconsin-Madison Department of Mathematics maintains two login servers for ssh connections from outside the department.<br />
<br />
# login0.math.wisc.edu: To connect to this server, you must have an IP address that corresponds to a wisc.edu host address. You can use the campus wireless[https://it.wisc.edu/services/wireless-uwnet/ | UWNet], [https://it.wisc.edu/services/wireless-eduroam/ | Eduroam], or [https://it.wisc.edu/services/wiscvpn/ | WiscVPN]. Other names for this server are bing.math.wisc.edu and login.math.wisc.edu.<br />
# login1.math.wisc.edu. To connect to this server, you must use an ssh key. For instructions on using an ssh key, see below. Another name for this server is abel.math.wisc.edu.<br />
<br />
To access Math Department resources via ssh, you must first use an ssh client to connect to either login0 or login1. You can then ssh to the system of your choice within the department.<br />
<br />
For example, suppose you wished to run a sage program on one of the research servers. For simplicity sake, the research servers have aliases (nicknames) magma0, magma1, ..., magma19, with the more powerful machines having the lowest numbers.<br />
<br />
To start your sage program, you might use an ssh client on your laptop to connect to login0.math.wisc.edu then run ssh again on login0 to connect to magma0. Please do not run research programs on login0 or login1. While these machines may have all the tools necessary to test programs, they are not powerful enough to handle more than the most trivial of tasks. If you run a program that uses a lot of resources on login0 or login1, you may prevent users (including yourself) from accessing these machines.<br />
===Generating an ssh Key===<br />
<br />
The IT staff recommends that you generate an ssh key to use when moving from one machine to another within the department network. Using an ssh key is both easier and more secure than retyping your password when you are moving from one Math Department machine to another. To use an ssh key, do the following.<br />
<br />
# Log onto any Linux workstation or research server in the department. You can use ssh as explained above to connect to login0 or login1 for this purpose.<br />
# At the prompt, type "ssh-keygen". Accept the default values. You need not enter a passphrase, so just press enter.<br />
# Add the key you just generated to your authorized_keys file. Type, "cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys"<br />
# To test, type, "ssh magma0". You should be connected to magma0 without having to retype your password.<br />
<br />
Note: The login server login1.math.wisc.edu requires the use of ssh keys to connect. You can use this same ssh key for that purpose. Instructions for doing so are different for each ssh client and are therefore beyond the scope of this document. Consult your client's documentation (or google) or ask a member of the IT staff for assistance.<br />
Summary:<br />
203<br />
This is a minor edit<br />
Watch this page<br />
<br />
Please note that all contributions to UW-Math Wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.<br />
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see UW-Math Wiki:Copyrights for details). Do not submit copyrighted work without permission!<br />
| Editing help (opens in new window)<br />
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Powered by MediaWiki</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=How_to_connect_to_our_servers_from_outside_of_Van_Vleck&diff=18851How to connect to our servers from outside of Van Vleck2020-01-31T17:16:34Z<p>Nagreen: /* Using ssh to Access Math Department Resources */</p>
<hr />
<div> <br />
Editing Using ssh (section)<br />
= Using ssh to Access Math Department Resources=<br />
<br />
The University of Wisconsin-Madison Department of Mathematics maintains two login servers for ssh connections from outside the department.<br />
<br />
# login.math.wisc.edu: To connect to this server, you must have an IP address that corresponds to a wisc.edu host address. You can use the campus wireless[https://it.wisc.edu/services/wireless-uwnet/ | UWNet], [https://it.wisc.edu/services/wireless-eduroam/ | Eduroam], or [https://it.wisc.edu/services/wiscvpn/ | WiscVPN]. Other names for this server are bing.math.wisc.edu and login.math.wisc.edu.<br />
# login1.math.wisc.edu. To connect to this server, you must use an ssh key. For instructions on using an ssh key, see below. Another name for this server is abel.math.wisc.edu.<br />
<br />
To access Math Department resources via ssh, you must first use an ssh client to connect to either login0 or login1. You can then ssh to the system of your choice within the department.<br />
<br />
For example, suppose you wished to run a sage program on one of the research servers. For simplicity sake, the research servers have aliases (nicknames) magma0, magma1, ..., magma19, with the more powerful machines having the lowest numbers.<br />
<br />
To start your sage program, you might use an ssh client on your laptop to connect to login0.math.wisc.edu then run ssh again on login0 to connect to magma0. Please do not run research programs on login0 or login1. While these machines may have all the tools necessary to test programs, they are not powerful enough to handle more than the most trivial of tasks. If you run a program that uses a lot of resources on login0 or login1, you may prevent users (including yourself) from accessing these machines.<br />
===Generating an ssh Key===<br />
<br />
The IT staff recommends that you generate an ssh key to use when moving from one machine to another within the department network. Using an ssh key is both easier and more secure than retyping your password when you are moving from one Math Department machine to another. To use an ssh key, do the following.<br />
<br />
# Log onto any Linux workstation or research server in the department. You can use ssh as explained above to connect to login0 or login1 for this purpose.<br />
# At the prompt, type "ssh-keygen". Accept the default values. You need not enter a passphrase, so just press enter.<br />
# Add the key you just generated to your authorized_keys file. Type, "cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys"<br />
# To test, type, "ssh magma0". You should be connected to magma0 without having to retype your password.<br />
<br />
Note: The login server login1.math.wisc.edu requires the use of ssh keys to connect. You can use this same ssh key for that purpose. Instructions for doing so are different for each ssh client and are therefore beyond the scope of this document. Consult your client's documentation (or google) or ask a member of the IT staff for assistance.<br />
Summary:<br />
203<br />
This is a minor edit<br />
Watch this page<br />
<br />
Please note that all contributions to UW-Math Wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.<br />
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see UW-Math Wiki:Copyrights for details). Do not submit copyrighted work without permission!<br />
| Editing help (opens in new window)<br />
Navigation menu<br />
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Jheim<br />
Talk<br />
Preferences<br />
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Log out<br />
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Powered by MediaWiki</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Connecting/Using_our_research_servers&diff=18850Connecting/Using our research servers2020-01-31T16:55:18Z<p>Nagreen: </p>
<hr />
<div>The Math Department has several research servers for your use, as well as the capability to use the Advanced Computing Infrastructure's condor cluster for your computing needs.<br />
<br />
Here's a list of resources that might be of help...<br />
<br />
* [[How to connect and run a program on a server]]<br />
* How to connect to a Magma Machine to run Magma (pdf)[https://docs.google.com/a/wisc.edu/viewer?a=v&pid=sites&srcid=d2lzYy5lZHV8bWF0aC1pbnRyYW5ldHxneDo1NDg5ZmE4MzZhMzVkNThk]<br />
* List of our research machines[https://sites.google.com/a/wisc.edu/math-intranet/home/computing/linux/research-computing/servers-you-can-use-for-research]<br />
* Command line guides for running matlab, maple, macaulay2, etc [https://sites.google.com/a/wisc.edu/math-intranet/home/computing/linux/research-computing/mathematical-programs-and-tools]<br />
* Specific commands for using our research servers collaboratively: [https://sites.google.com/a/wisc.edu/math-intranet/home/computing/linux/research-computing/specific-commands-to-use-with-research-computing]<br />
* [[How to Use Intel Parallel Studio Compilers (icc and ifort)]]<br />
* [[Using the Wisconsin Undergraduate Research Cluster(WURC)]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=NTS_Spring_Semester_2020&diff=18776NTS Spring Semester 20202020-01-24T15:36:43Z<p>Nagreen: /* Schedule */</p>
<hr />
<div>= Number Theory / Representation Theory Seminar, University of Wisconsin - Madison =<br />
<br />
<br />
*'''When:''' Thursdays, 2:30 PM – 3:30 PM<br />
*'''Where:''' Van Vleck B321<br />
*Please join the [https://mailhost.math.wisc.edu/mailman/listinfo/nts NT/RT mailing list:] (you must be on a math department computer to use this link).<br />
<br />
There is also an accompanying [https://www.math.wisc.edu/wiki/index.php/NTSGrad_Spring_2020 graduate-level seminar], which meets on Tuesdays.<br><br />
<br />
You can find our last semester speakers in [https://www.math.wisc.edu/wiki/index.php/NTS Fall 2019].<br />
<br><br />
You can find our previous speakers in [https://www.math.wisc.edu/wiki/index.php/NTS_Spring_2018_Semester Spring 2018].<br />
<br />
<br />
= Schedule =<br />
<br />
<center><br />
<br />
{| style="color:black; font-size:120%" border="0" cellpadding="14" cellspacing="5"<br />
|-<br />
| bgcolor="#D0D0D0" width="300" align="center"|'''Date'''<br />
| bgcolor="#F0A0A0" width="300" align="center"|'''Speaker''' (click for homepage)<br />
| bgcolor="#BCD2EE" width="300" align="center"|'''Title''' (click for abstract)<br />
|-<br />
| bgcolor="#E0E0E0" align="center" | Jan 23<br />
| bgcolor="#F0B0B0" align="center" | Rahul Krishna (Northwestern)<br />
| bgcolor="#BCE2FE"| A relative trace formula comparison for the global Gross-Prasad conjecture for Orthogonal groups<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Jan 30<br />
| bgcolor="#F0B0B0" align="center" | Eric Stubley (U. of Chicago)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | '''Friday Jan 31, 3-4 pm'''<br />
| bgcolor="#F0B0B0" align="center" | Lillian Pierce (Duke) <br /> (joint analysis / NT seminar)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 6<br />
| bgcolor="#F0B0B0" align="center" | Brian Smithling<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 13<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 20<br />
| bgcolor="#F0B0B0" align="center" | Shai Evra<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 27<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 5<br />
| bgcolor="#F0B0B0" align="center" | Jessica Fintzen<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 12<br />
| bgcolor="#F0B0B0" align="center" | Andrea Dotto<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 19<br />
| bgcolor="#F0B0B0" align="center" | Spring Break<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 26<br />
| bgcolor="#F0B0B0" align="center" | Daniel Litt<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 2<br />
| bgcolor="#F0B0B0" align="center" | Caroline Turnage-Butterbaugh<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 9<br />
| bgcolor="#F0B0B0" align="center" | Rahul Dalal<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 16 <br />
| bgcolor="#F0B0B0" align="center" | Aaron Pollack<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 23<br />
| bgcolor="#F0B0B0" align="center" | Jayce Getz<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 30<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
|}<br />
</center><br />
<br />
<br><br />
<br />
*to be confirmed</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=NTS_Spring_Semester_2020&diff=18775NTS Spring Semester 20202020-01-24T15:36:29Z<p>Nagreen: /* Schedule */</p>
<hr />
<div>= Number Theory / Representation Theory Seminar, University of Wisconsin - Madison =<br />
<br />
<br />
*'''When:''' Thursdays, 2:30 PM – 3:30 PM<br />
*'''Where:''' Van Vleck B321<br />
*Please join the [https://mailhost.math.wisc.edu/mailman/listinfo/nts NT/RT mailing list:] (you must be on a math department computer to use this link).<br />
<br />
There is also an accompanying [https://www.math.wisc.edu/wiki/index.php/NTSGrad_Spring_2020 graduate-level seminar], which meets on Tuesdays.<br><br />
<br />
You can find our last semester speakers in [https://www.math.wisc.edu/wiki/index.php/NTS Fall 2019].<br />
<br><br />
You can find our previous speakers in [https://www.math.wisc.edu/wiki/index.php/NTS_Spring_2018_Semester Spring 2018].<br />
<br />
<br />
= Schedule =<br />
<br />
<center><br />
<br />
{| style="color:black; font-size:120%" border="0" cellpadding="14" cellspacing="5"<br />
|-<br />
| bgcolor="#D0D0D0" width="300" align="center"|'''Date'''<br />
| bgcolor="#F0A0A0" width="300" align="center"|'''Speaker''' (click for homepage)<br />
| bgcolor="#BCD2EE" width="300" align="center"|'''Title''' (click for abstract)<br />
|-<br />
| bgcolor="#E0E0E0" align="center" | Jan 23<br />
| bgcolor="#F0B0B0" align="center" | Rahul Krishna (Northwestern)<br />
| bgcolor="#BCE2FE"| A relative trace formula comparison for the global Gross-Prasad conjecture for Orthogonal groups<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Jan 30<br />
| bgcolor="#F0B0B0" align="center" | Eric Stubley (U. of Chicago)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | '''Friday Jan 31, 3-4 pm'''<br />
| bgcolor="#F0B0B0" align="center" | Lillian Pierce <br /> (joint analysis / NT seminar)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 6<br />
| bgcolor="#F0B0B0" align="center" | Brian Smithling<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 13<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 20<br />
| bgcolor="#F0B0B0" align="center" | Shai Evra<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 27<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 5<br />
| bgcolor="#F0B0B0" align="center" | Jessica Fintzen<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 12<br />
| bgcolor="#F0B0B0" align="center" | Andrea Dotto<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 19<br />
| bgcolor="#F0B0B0" align="center" | Spring Break<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 26<br />
| bgcolor="#F0B0B0" align="center" | Daniel Litt<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 2<br />
| bgcolor="#F0B0B0" align="center" | Caroline Turnage-Butterbaugh<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 9<br />
| bgcolor="#F0B0B0" align="center" | Rahul Dalal<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 16 <br />
| bgcolor="#F0B0B0" align="center" | Aaron Pollack<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 23<br />
| bgcolor="#F0B0B0" align="center" | Jayce Getz<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 30<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
|}<br />
</center><br />
<br />
<br><br />
<br />
*to be confirmed</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=NTS_Spring_Semester_2020&diff=18773NTS Spring Semester 20202020-01-23T20:13:36Z<p>Nagreen: /* Schedule */</p>
<hr />
<div>= Number Theory / Representation Theory Seminar, University of Wisconsin - Madison =<br />
<br />
<br />
*'''When:''' Thursdays, 2:30 PM – 3:30 PM<br />
*'''Where:''' Van Vleck B321<br />
*Please join the [https://mailhost.math.wisc.edu/mailman/listinfo/nts NT/RT mailing list:] (you must be on a math department computer to use this link).<br />
<br />
There is also an accompanying [https://www.math.wisc.edu/wiki/index.php/NTSGrad_Spring_2020 graduate-level seminar], which meets on Tuesdays.<br><br />
<br />
You can find our last semester speakers in [https://www.math.wisc.edu/wiki/index.php/NTS Fall 2019].<br />
<br><br />
You can find our previous speakers in [https://www.math.wisc.edu/wiki/index.php/NTS_Spring_2018_Semester Spring 2018].<br />
<br />
<br />
= Schedule =<br />
<br />
<center><br />
<br />
{| style="color:black; font-size:120%" border="0" cellpadding="14" cellspacing="5"<br />
|-<br />
| bgcolor="#D0D0D0" width="300" align="center"|'''Date'''<br />
| bgcolor="#F0A0A0" width="300" align="center"|'''Speaker''' (click for homepage)<br />
| bgcolor="#BCD2EE" width="300" align="center"|'''Title''' (click for abstract)<br />
|-<br />
| bgcolor="#E0E0E0" align="center" | Jan 23<br />
| bgcolor="#F0B0B0" align="center" | Rahul Krishna (Northwestern)<br />
| bgcolor="#BCE2FE"| A relative trace formula comparison for the global Gross-Prasad conjecture for Orthogonal groups<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Jan 30<br />
| bgcolor="#F0B0B0" align="center" | Eric Stubley<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | '''Friday Jan 31, 3-4 pm'''<br />
| bgcolor="#F0B0B0" align="center" | Lillian Pierce <br /> (joint analysis / NT seminar)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 6<br />
| bgcolor="#F0B0B0" align="center" | Brian Smithling<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 13<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 20<br />
| bgcolor="#F0B0B0" align="center" | Shai Evra<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 27<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 5<br />
| bgcolor="#F0B0B0" align="center" | Jessica Fintzen<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 12<br />
| bgcolor="#F0B0B0" align="center" | Andrea Dotto<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 19<br />
| bgcolor="#F0B0B0" align="center" | Spring Break<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 26<br />
| bgcolor="#F0B0B0" align="center" | Daniel Litt<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 2<br />
| bgcolor="#F0B0B0" align="center" | Caroline Turnage-Butterbaugh<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 9<br />
| bgcolor="#F0B0B0" align="center" | Rahul Dalal<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 16 <br />
| bgcolor="#F0B0B0" align="center" | Aaron Pollack<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 23<br />
| bgcolor="#F0B0B0" align="center" | Jayce Getz<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 30<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
|}<br />
</center><br />
<br />
<br><br />
<br />
*to be confirmed</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18772Applied/ACMS2020-01-23T19:58:11Z<p>Nagreen: /* Future semesters */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
|-<br />
|}<br />
<br />
== Future semesters ==<br />
<br />
<br />
<br />
<br />
----<br />
<br />
== Archived semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18771Applied/ACMS2020-01-23T19:57:59Z<p>Nagreen: /* Archived semesters */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
|-<br />
|}<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
<br />
----<br />
== Archived semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18770Applied/ACMS2020-01-23T19:57:25Z<p>Nagreen: /* Spring 2020 */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
|-<br />
|}<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
== Archived semesters ==<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18769Applied/ACMS2020-01-23T19:56:56Z<p>Nagreen: /* Spring 2020 */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
-<br />
}<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
== Archived semesters ==<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18768Applied/ACMS2020-01-23T19:56:43Z<p>Nagreen: /* Spring 2020 */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
}<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
== Archived semesters ==<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18767Applied/ACMS2020-01-23T19:56:33Z<p>Nagreen: /* Fall 2019 */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Spring 2020 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Jan 31<br />
|[https://www.math.wisc.edu/~hung/ Hung Tran] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Hung Tran (UW-Madison)| Coagulation-Fragmentation equations with multiplicative coagulation kernel and constant fragmentation kernel]]''<br />
| Li<br />
|-<br />
| Feb 7<br />
|[https://www.usna.edu/Users/weaprcon/avramov/index.php Svetlana Avramov-Zamurovic] (United States Naval Academy)<br />
|''[[Applied/ACMS/absS20#Svetlana Avramov-Zamurovic (United States Naval Academy)|TBA]]''<br />
| Stechmann<br />
|-<br />
| Feb 14<br />
|[http://math.mit.edu/~vadicgor/ Gorin Vadim] (UW-Madison)<br />
|''[[Applied/ACMS/absS20#Gorin Vadim (UW-Madison)|TBA, either random matrix or KPZ equation]]''<br />
| Li<br />
|-<br />
| Feb 21<br />
|[http://www.personal.psu.edu/jzh13/ John Harlim] (Penn State University)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Feb 28<br />
|[https://cims.nyu.edu/~yangq/ Qiu Yang] (NYU/UVic/NCAR)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| Chen<br />
|-<br />
| Mar 6<br />
|[https://directory.engr.wisc.edu/ep/Faculty/Bronkhorst_Curt/ Curt Bronkhorst] (UW-Madison Engineering Physics)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|Computational Prediction of Shear Banding and Deformation Twinning in Metals]]''<br />
| Smith<br />
|-<br />
| Mar 13<br />
|[http://www.columbia.edu/~ktm2132/ Kyle Mandli] (Columbia)<br />
|''[[Applied/ACMS/absS20#Kyle Mandli (Columbia)|TBA]]''<br />
| Wally<br />
|-<br />
| Mar 20<br />
|[Spring break] (Spring Break!)<br />
|''[[Applied/ACMS/absS20#Speaker (institution)|title]]''<br />
| host<br />
|-<br />
| Mar 27<br />
|[http://www-personal.umich.edu/~jcsch/ John Schotland] (U Mich)<br />
|''[[Applied/ACMS/absS20#John Schotland (Michigan)|title]]''<br />
| host<br />
|-<br />
| Apr 3<br />
|[http://keaton-burns.com/ Keaton Burns] (MIT)<br />
|''[[Applied/ACMS/absS20#Keaton Burns (MIT)|title]]''<br />
| Spagnolie<br />
|-<br />
| Apr 10<br />
|[https://www.princeton.edu/~lecoanet/ Daniel Lecoanet] (Princeton)<br />
|''[[Applied/ACMS/absS20#Daniel Lecoanet (Princeton)|TBA]]''<br />
| Wally<br />
|-<br />
| Apr 17<br />
|[https://www.ornl.gov/staff-profile/hoang-tran Hoang Tran] (Oak Ridge National Laboratory)<br />
|''[[Applied/ACMS/absS20#Hoang Tran (institution)|title]]''<br />
| Tran<br />
|-<br />
| Apr 24<br />
|[https://www.pml.unc.edu/ Pedro Saenz] (UNC)<br />
|''[[Applied/ACMS/absF19#Pedro Saenz (UNC)|TBA]]''<br />
| Spagnolie<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
== Archived semesters ==<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS/Spring2020&diff=18766Applied/ACMS/Spring20202020-01-23T19:56:19Z<p>Nagreen: /* Spring 2020 */</p>
<hr />
<div></div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS/Fall2019&diff=18765Applied/ACMS/Fall20192020-01-23T19:55:54Z<p>Nagreen: Created page with "{| cellpadding="8" !align="left" | date !align="left" | speaker !align="left" | title !align="left" | host(s) |- | Sept 6 |[http://math.mit.edu/~lzepeda/ Leonardo Andrés Zepe..."</p>
<hr />
<div>{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Sept 6<br />
|[http://math.mit.edu/~lzepeda/ Leonardo Andrés Zepeda Núñez] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Leonardo Andrés Zepeda Núñez (UW-Madison)|Deep Learning for Electronic Structure Computations: A Tale of Symmetries, Locality, and Physics]]''<br />
| Li<br />
|-<br />
| Sept 13<br />
|[http://dfloryan.mycpanel.princeton.edu/ Daniel Floryan] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Daniel Floryan (UW-Madison)|Flexible Inertial Swimmers]]''<br />
| Jean-Luc<br />
|-<br />
| Sept 14-15<br />
|[https://www.ams.org/meetings/sectional/2267_program.html AMS sectional meeting]<br />
| UW-Madison<br />
|-<br />
| Sept 20<br />
|[https://www.gfdl.noaa.gov/mitch-bushuk/ Mitch Bushuk] (GFDL/Princeton)<br />
|''[[Applied/ACMS/absF19#Mitch Bushuk (GFDL/Princeton)|Arctic Sea Ice Predictability in a Changing Cryosphere]]''<br />
| Chen<br />
|-<br />
| Sept 20 (colloquium, 4pm, B239)<br />
|[https://services.math.duke.edu/~jianfeng/ Jianfeng Lu] (Duke)<br />
|''[[Applied/ACMS/absF19#Jianfeng Lu (Duke)|How to "localize" the computation?]]''<br />
| Li<br />
|-<br />
| Sept 27<br />
|[http://www.math.wisc.edu/~qinli/ Qin Li] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Qin Li (UW-Madison)|The power of randomness in scientific computing]]''<br />
| host<br />
|-<br />
| Oct 4<br />
|[https://isearch.asu.edu/profile/2169104 Joel Nishimura] (Arizona State)<br />
|''[[Applied/ACMS/absF19#Joel Nishimura (Arizona State)|Random graph models with fixed degree sequences: choices, consequences and irreducibility proofs for sampling]]''<br />
| Cochran<br />
|-<br />
| Oct 11<br />
|[http://pi.math.cornell.edu/~ajt/ Alex Townsend] (Cornell)<br />
|''[[Applied/ACMS/absF19#Alex Townsend (Cornell)|Why are so many matrices and tensors of low rank in computational mathematics?]]''<br />
| Li<br />
|-<br />
| Oct 18<br />
|[http://mehta.mechse.illinois.edu/ Prashant G. Mehta] (UIUC)<br />
|''[[Applied/ACMS/absF19#Prashant G. Mehta (UIUC)|What is the Lagrangian for Nonlinear Filtering?]]''<br />
| Chen<br />
|-<br />
| Oct 25<br />
|[https://www.math.wisc.edu/~jeanluc/ Jean-Luc Thiffeault] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Jean-Luc Thiffeault|Shape matters: A Brownian microswimmer interacting with walls]]''<br />
| <br />
|-<br />
| Nov 1<br />
|[https://users.oden.utexas.edu/~tanbui/ Tan Bui] (UT-Austin)<br />
|''[[Applied/ACMS/absF19#Tan Bui (UT-Austin)|Scalable Algorithms for Data-driven Inverse and Learning Problems]]''<br />
| Li<br />
|-<br />
| Nov 8<br />
|[https://pan.labs.wisc.edu/staff/pan-wenxiao/ Wenxiao Pan] (UW)<br />
|''[[Applied/ACMS/absF19#Wenxiao Pan (UW)|Mesoscale Modeling of Soft Matter]]''<br />
| Spagnolie<br />
| <br />
|-<br />
| Nov 15<br />
|[https://www.math.wisc.edu/~pgera/ Prerna Gera] (UW)<br />
|''[[Applied/ACMS/absF19#Prerna Gera (UW)|Patchy Vesicles in Shear Flow]]''<br />
| Spagnolie<br />
|-<br />
| Dec 6<br />
|[https://math.berkeley.edu/~linlin/ Lin Lin] (Berkeley)<br />
|''[[Applied/ACMS/absF19#Lin Lin (UC Berkeley)|Quantum Linear System Solver]]''<br />
| Li<br />
|-<br />
|}</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Applied/ACMS&diff=18764Applied/ACMS2020-01-23T19:55:37Z<p>Nagreen: /* Archived semesters */</p>
<hr />
<div>__NOTOC__<br />
<br />
= Applied and Computational Mathematics Seminar =<br />
<br />
*'''When:''' Fridays at 2:25pm (except as otherwise indicated)<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~qinli/ Qin Li], [http://www.math.wisc.edu/~spagnolie/ Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]<br />
*'''To join the ACMS mailing list:''' See [https://admin.lists.wisc.edu/index.php?p=11&l=acms mailing list] website.<br />
<br />
<br><br />
<br />
<br />
== Fall 2019 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
| Sept 6<br />
|[http://math.mit.edu/~lzepeda/ Leonardo Andrés Zepeda Núñez] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Leonardo Andrés Zepeda Núñez (UW-Madison)|Deep Learning for Electronic Structure Computations: A Tale of Symmetries, Locality, and Physics]]''<br />
| Li<br />
|-<br />
| Sept 13<br />
|[http://dfloryan.mycpanel.princeton.edu/ Daniel Floryan] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Daniel Floryan (UW-Madison)|Flexible Inertial Swimmers]]''<br />
| Jean-Luc<br />
|-<br />
| Sept 14-15<br />
|[https://www.ams.org/meetings/sectional/2267_program.html AMS sectional meeting]<br />
| UW-Madison<br />
|-<br />
| Sept 20<br />
|[https://www.gfdl.noaa.gov/mitch-bushuk/ Mitch Bushuk] (GFDL/Princeton)<br />
|''[[Applied/ACMS/absF19#Mitch Bushuk (GFDL/Princeton)|Arctic Sea Ice Predictability in a Changing Cryosphere]]''<br />
| Chen<br />
|-<br />
| Sept 20 (colloquium, 4pm, B239)<br />
|[https://services.math.duke.edu/~jianfeng/ Jianfeng Lu] (Duke)<br />
|''[[Applied/ACMS/absF19#Jianfeng Lu (Duke)|How to "localize" the computation?]]''<br />
| Li<br />
|-<br />
| Sept 27<br />
|[http://www.math.wisc.edu/~qinli/ Qin Li] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Qin Li (UW-Madison)|The power of randomness in scientific computing]]''<br />
| host<br />
|-<br />
| Oct 4<br />
|[https://isearch.asu.edu/profile/2169104 Joel Nishimura] (Arizona State)<br />
|''[[Applied/ACMS/absF19#Joel Nishimura (Arizona State)|Random graph models with fixed degree sequences: choices, consequences and irreducibility proofs for sampling]]''<br />
| Cochran<br />
|-<br />
| Oct 11<br />
|[http://pi.math.cornell.edu/~ajt/ Alex Townsend] (Cornell)<br />
|''[[Applied/ACMS/absF19#Alex Townsend (Cornell)|Why are so many matrices and tensors of low rank in computational mathematics?]]''<br />
| Li<br />
|-<br />
| Oct 18<br />
|[http://mehta.mechse.illinois.edu/ Prashant G. Mehta] (UIUC)<br />
|''[[Applied/ACMS/absF19#Prashant G. Mehta (UIUC)|What is the Lagrangian for Nonlinear Filtering?]]''<br />
| Chen<br />
|-<br />
| Oct 25<br />
|[https://www.math.wisc.edu/~jeanluc/ Jean-Luc Thiffeault] (UW-Madison)<br />
|''[[Applied/ACMS/absF19#Jean-Luc Thiffeault|Shape matters: A Brownian microswimmer interacting with walls]]''<br />
| <br />
|-<br />
| Nov 1<br />
|[https://users.oden.utexas.edu/~tanbui/ Tan Bui] (UT-Austin)<br />
|''[[Applied/ACMS/absF19#Tan Bui (UT-Austin)|Scalable Algorithms for Data-driven Inverse and Learning Problems]]''<br />
| Li<br />
|-<br />
| Nov 8<br />
|[https://pan.labs.wisc.edu/staff/pan-wenxiao/ Wenxiao Pan] (UW)<br />
|''[[Applied/ACMS/absF19#Wenxiao Pan (UW)|Mesoscale Modeling of Soft Matter]]''<br />
| Spagnolie<br />
| <br />
|-<br />
| Nov 15<br />
|[https://www.math.wisc.edu/~pgera/ Prerna Gera] (UW)<br />
|''[[Applied/ACMS/absF19#Prerna Gera (UW)|Patchy Vesicles in Shear Flow]]''<br />
| Spagnolie<br />
|-<br />
| Dec 6<br />
|[https://math.berkeley.edu/~linlin/ Lin Lin] (Berkeley)<br />
|''[[Applied/ACMS/absF19#Lin Lin (UC Berkeley)|Quantum Linear System Solver]]''<br />
| Li<br />
|-<br />
|}<br />
<br />
== Future semesters ==<br />
<br />
*[[Applied/ACMS/Spring2020|Spring 2020]]<br />
<br />
== Archived semesters ==<br />
*[[Applied/ACMS/Fall2019|Fall 2019]]<br />
*[[Applied/ACMS/Spring2019|Spring 2019]]<br />
*[[Applied/ACMS/Fall2018|Fall 2018]]<br />
*[[Applied/ACMS/Spring2018|Spring 2018]]<br />
*[[Applied/ACMS/Fall2017|Fall 2017]]<br />
*[[Applied/ACMS/Spring2017|Spring 2017]]<br />
*[[Applied/ACMS/Fall2016|Fall 2016]]<br />
*[[Applied/ACMS/Spring2016|Spring 2016]]<br />
*[[Applied/ACMS/Fall2015|Fall 2015]]<br />
*[[Applied/ACMS/Spring2015|Spring 2015]]<br />
*[[Applied/ACMS/Fall2014|Fall 2014]]<br />
*[[Applied/ACMS/Spring2014|Spring 2014]]<br />
*[[Applied/ACMS/Fall2013|Fall 2013]]<br />
*[[Applied/ACMS/Spring2013|Spring 2013]]<br />
*[[Applied/ACMS/Fall2012|Fall 2012]]<br />
*[[Applied/ACMS/Spring2012|Spring 2012]]<br />
*[[Applied/ACMS/Fall2011|Fall 2011]]<br />
*[[Applied/ACMS/Spring2011|Spring 2011]]<br />
*[[Applied/ACMS/Fall2010|Fall 2010]]<br />
<!--<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~jeanluc/ACMS/archive/Fall06.html Fall 2006]<br />
--><br />
<br />
<br><br />
<br />
----<br />
Return to the [[Applied|Applied Mathematics Group Page]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=SIAM_Student_Chapter_Seminar/Fall2019&diff=18729SIAM Student Chapter Seminar/Fall20192020-01-21T20:17:40Z<p>Nagreen: Created page with "__NOTOC__ *'''When:''' Most Friday at 11:30am *'''Where:''' 901 Van Vleck Hall *'''Organizers:''' [http://www.math.wisc.edu/~xshen/ Xiao Shen] *'''Faculty advisers:''' [http:..."</p>
<hr />
<div>__NOTOC__<br />
<br />
*'''When:''' Most Friday at 11:30am<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~xshen/ Xiao Shen]<br />
*'''Faculty advisers:''' [http://www.math.wisc.edu/~jeanluc/ Jean-Luc Thiffeault], [http://pages.cs.wisc.edu/~swright/ Steve Wright] <br />
*'''To join the SIAM Chapter mailing list:''' email [join-siam-chapter@lists.wisc.edu].<br />
<br />
<br><br />
<br />
== Fall 2019 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
|-<br />
|Sept. 27, Oct. 4 <br />
|[http://www.math.wisc.edu/~xshen/ Xiao Shen] (Math)<br />
|''[[#Sep 27, Oct 4: Xiao Shen (Math)|The corner growth model]]''<br />
|-<br />
|-<br />
|Oct. 18 <br />
|[https://scholar.google.com/citations?user=7cVl9IkAAAAJ&hl=en Bhumesh Kumar] (EE)<br />
|''[[#Oct 18: Bhumesh Kumar (EE)|Non-stationary Stochastic Approximation]]''<br />
|<br />
|-<br />
|-<br />
|Oct. 25 <br />
|Max (Math)<br />
|''[[#Oct 25: Max (Math)|Coalescent with Recombination]]''<br />
|<br />
|-<br />
|-<br />
|Nov. 8<br />
|Hongfei Chen (Math)<br />
|''[[#Nov 15: Hongfei Chen (Math)| Brownian swimmers in a channel]]''<br />
|<br />
|-<br />
|-<br />
|Dec. 10<br />
|[http://www.maths.manchester.ac.uk/~higham/ Nicholas J. Higham] (University of Manchester)<br />
|''[[#Dec 10: Nicholas J. Higham (University of Manchester)|Scientific Writing]]''<br />
|-<br />
|-<br />
|<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
=== Sep 27, Oct 4: Xiao Shen (Math) ===<br />
'''The corner growth model'''<br />
<br />
Imagine there is an arbitrary amount of donuts attached to the integer points of Z^2. The goal is to pick an optimal up-right path which allows you to eat as much donuts as possible along the way. We will look at some basic combinatorial observations, and how specific probability distribution would help us to study this model.<br />
<br />
=== Oct 18: Bhumesh Kumar (EE) ===<br />
'''Non-stationary Stochastic Approximation'''<br />
<br />
Abstract: Robbins–Monro pioneered a general framework for stochastic approximation to find roots of a function with just noisy evaluations.With applications in optimization, signal processing and control theory there is resurged interest in time-varying aka non-stationary functions. This works addresses that premise by providing explicit, all time, non-asymptotic tracking error bounds via Alekseev's nonlinear variations of constant formula. <br />
<br />
Reference: https://arxiv.org/abs/1802.07759 (To appear in Mathematics of Control, Signals and Systems)<br />
<br />
=== Oct 25: Max (Math) ===<br />
'''Coalescent with Recombination'''<br />
<br />
I will talk about the continuous time coalescent with mutation and recombination, with a focus on introducing key concepts related to genetic distance and evolutionary relatedness. The talk will be informal and accessible.<br />
<br />
=== Nov 15: Hongfei Chen (Math) ===<br />
'''Brownian swimmers in a channel'''<br />
<br />
Abstract: Shape matters! I will talk about how their shapes affect their mean reversal time.<br />
<br />
=== Dec 10: Nicholas J. Higham (University of Manchester) ===<br />
'''Scientific Writing'''<br />
<br />
I will discuss various aspects of scientific writing, including<br />
<br />
• the craft of writing in general,<br />
<br />
• aspects specific to mathematical writing,<br />
<br />
• English Usage,<br />
<br />
• workflow, and<br />
<br />
• revising drafts and proofreading.<br />
<br />
Plenty of examples and links to further information will be given. I will also discuss<br />
my experiences in preparing ''Handbook of Writing for the Mathematical Sciences'' (third<br />
edition, SIAM, 2020).<br />
<br />
<br />
<br></div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=SIAM_Student_Chapter_Seminar&diff=18728SIAM Student Chapter Seminar2020-01-21T20:17:17Z<p>Nagreen: /* Past Semesters */</p>
<hr />
<div>__NOTOC__<br />
<br />
*'''When:''' Most Friday at 11:30am<br />
*'''Where:''' 901 Van Vleck Hall<br />
*'''Organizers:''' [http://www.math.wisc.edu/~xshen/ Xiao Shen]<br />
*'''Faculty advisers:''' [http://www.math.wisc.edu/~jeanluc/ Jean-Luc Thiffeault], [http://pages.cs.wisc.edu/~swright/ Steve Wright] <br />
*'''To join the SIAM Chapter mailing list:''' email [join-siam-chapter@lists.wisc.edu].<br />
<br />
<br><br />
<br />
== Fall 2019 ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
|-<br />
|Sept. 27, Oct. 4 <br />
|[http://www.math.wisc.edu/~xshen/ Xiao Shen] (Math)<br />
|''[[#Sep 27, Oct 4: Xiao Shen (Math)|The corner growth model]]''<br />
|-<br />
|-<br />
|Oct. 18 <br />
|[https://scholar.google.com/citations?user=7cVl9IkAAAAJ&hl=en Bhumesh Kumar] (EE)<br />
|''[[#Oct 18: Bhumesh Kumar (EE)|Non-stationary Stochastic Approximation]]''<br />
|<br />
|-<br />
|-<br />
|Oct. 25 <br />
|Max (Math)<br />
|''[[#Oct 25: Max (Math)|Coalescent with Recombination]]''<br />
|<br />
|-<br />
|-<br />
|Nov. 8<br />
|Hongfei Chen (Math)<br />
|''[[#Nov 15: Hongfei Chen (Math)| Brownian swimmers in a channel]]''<br />
|<br />
|-<br />
|-<br />
|Dec. 10<br />
|[http://www.maths.manchester.ac.uk/~higham/ Nicholas J. Higham] (University of Manchester)<br />
|''[[#Dec 10: Nicholas J. Higham (University of Manchester)|Scientific Writing]]''<br />
|-<br />
|-<br />
|<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
=== Sep 27, Oct 4: Xiao Shen (Math) ===<br />
'''The corner growth model'''<br />
<br />
Imagine there is an arbitrary amount of donuts attached to the integer points of Z^2. The goal is to pick an optimal up-right path which allows you to eat as much donuts as possible along the way. We will look at some basic combinatorial observations, and how specific probability distribution would help us to study this model.<br />
<br />
=== Oct 18: Bhumesh Kumar (EE) ===<br />
'''Non-stationary Stochastic Approximation'''<br />
<br />
Abstract: Robbins–Monro pioneered a general framework for stochastic approximation to find roots of a function with just noisy evaluations.With applications in optimization, signal processing and control theory there is resurged interest in time-varying aka non-stationary functions. This works addresses that premise by providing explicit, all time, non-asymptotic tracking error bounds via Alekseev's nonlinear variations of constant formula. <br />
<br />
Reference: https://arxiv.org/abs/1802.07759 (To appear in Mathematics of Control, Signals and Systems)<br />
<br />
=== Oct 25: Max (Math) ===<br />
'''Coalescent with Recombination'''<br />
<br />
I will talk about the continuous time coalescent with mutation and recombination, with a focus on introducing key concepts related to genetic distance and evolutionary relatedness. The talk will be informal and accessible.<br />
<br />
=== Nov 15: Hongfei Chen (Math) ===<br />
'''Brownian swimmers in a channel'''<br />
<br />
Abstract: Shape matters! I will talk about how their shapes affect their mean reversal time.<br />
<br />
=== Dec 10: Nicholas J. Higham (University of Manchester) ===<br />
'''Scientific Writing'''<br />
<br />
I will discuss various aspects of scientific writing, including<br />
<br />
• the craft of writing in general,<br />
<br />
• aspects specific to mathematical writing,<br />
<br />
• English Usage,<br />
<br />
• workflow, and<br />
<br />
• revising drafts and proofreading.<br />
<br />
Plenty of examples and links to further information will be given. I will also discuss<br />
my experiences in preparing ''Handbook of Writing for the Mathematical Sciences'' (third<br />
edition, SIAM, 2020).<br />
<br />
<br />
<br><br />
<br />
== Past Semesters ==<br />
*[[SIAM_Student_Chapter_Seminar/Fall2018|Fall 2018]]<br />
*[[SIAM_Student_Chapter_Seminar/Spring2017|Spring 2017]]<br />
*[[SIAM_Student_Chapter_Seminar/Fall2019|Fall 2019]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=NTS_Spring_Semester_2020&diff=18666NTS Spring Semester 20202020-01-17T17:38:19Z<p>Nagreen: /* Schedule */</p>
<hr />
<div>= Number Theory / Representation Theory Seminar, University of Wisconsin - Madison =<br />
<br />
<br />
*'''When:''' Thursdays, 2:30 PM – 3:30 PM<br />
*'''Where:''' Van Vleck B321<br />
*Please join the [https://mailhost.math.wisc.edu/mailman/listinfo/nts NT/RT mailing list:] (you must be on a math department computer to use this link).<br />
<br />
There is also an accompanying [https://www.math.wisc.edu/wiki/index.php/NTSGrad_Spring_2020 graduate-level seminar], which meets on Tuesdays.<br><br />
<br />
You can find our last semester speakers in [https://www.math.wisc.edu/wiki/index.php/NTS Fall 2019].<br />
<br><br />
You can find our previous speakers in [https://www.math.wisc.edu/wiki/index.php/NTS_Spring_2018_Semester Spring 2018].<br />
<br />
<br />
= Schedule =<br />
<br />
<center><br />
<br />
{| style="color:black; font-size:120%" border="0" cellpadding="14" cellspacing="5"<br />
|-<br />
| bgcolor="#D0D0D0" width="300" align="center"|'''Date'''<br />
| bgcolor="#F0A0A0" width="300" align="center"|'''Speaker''' (click for homepage)<br />
| bgcolor="#BCD2EE" width="300" align="center"|'''Title''' (click for abstract)<br />
|-<br />
| bgcolor="#E0E0E0" align="center" | Jan 23<br />
| bgcolor="#F0B0B0" align="center" | Rahul Krishna (Northwestern)<br />
| bgcolor="#BCE2FE"| TBA<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Jan 30<br />
| bgcolor="#F0B0B0" align="center" | Eric Stubley<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | '''Friday Jan 31, 3-4 pm'''<br />
| bgcolor="#F0B0B0" align="center" | Lillian Pierce <br /> (joint analysis / NT seminar)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 6<br />
| bgcolor="#F0B0B0" align="center" | Brian Smithling<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 13<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 20<br />
| bgcolor="#F0B0B0" align="center" | Shai Evra<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 27<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 5<br />
| bgcolor="#F0B0B0" align="center" | Jessica Fintzen<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 12<br />
| bgcolor="#F0B0B0" align="center" | Andrea Dotto<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 19<br />
| bgcolor="#F0B0B0" align="center" | Spring Break<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 26<br />
| bgcolor="#F0B0B0" align="center" | Daniel Litt<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 2<br />
| bgcolor="#F0B0B0" align="center" | Caroline Turnage-Butterbaugh<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 9<br />
| bgcolor="#F0B0B0" align="center" | Rahul Dalal<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 16 <br />
| bgcolor="#F0B0B0" align="center" | Aaron Pollack<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 23<br />
| bgcolor="#F0B0B0" align="center" | Jayce Getz<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 30<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
|}<br />
</center><br />
<br />
<br><br />
<br />
*to be confirmed</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=NTS_Spring_Semester_2020&diff=18665NTS Spring Semester 20202020-01-17T17:37:59Z<p>Nagreen: </p>
<hr />
<div>= Number Theory / Representation Theory Seminar, University of Wisconsin - Madison =<br />
<br />
<br />
*'''When:''' Thursdays, 2:30 PM – 3:30 PM<br />
*'''Where:''' Van Vleck B321<br />
*Please join the [https://mailhost.math.wisc.edu/mailman/listinfo/nts NT/RT mailing list:] (you must be on a math department computer to use this link).<br />
<br />
There is also an accompanying [https://www.math.wisc.edu/wiki/index.php/NTSGrad_Spring_2020 graduate-level seminar], which meets on Tuesdays.<br><br />
<br />
You can find our last semester speakers in [https://www.math.wisc.edu/wiki/index.php/NTS Fall 2019].<br />
<br><br />
You can find our previous speakers in [https://www.math.wisc.edu/wiki/index.php/NTS_Spring_2018_Semester Spring 2018].<br />
<br />
<br />
= Schedule =<br />
<br />
<center><br />
<br />
{| style="color:black; font-size:120%" border="0" cellpadding="14" cellspacing="5"<br />
|-<br />
| bgcolor="#D0D0D0" width="300" align="center"|'''Date'''<br />
| bgcolor="#F0A0A0" width="300" align="center"|'''Speaker''' (click for homepage)<br />
| bgcolor="#BCD2EE" width="300" align="center"|'''Title''' (click for abstract)<br />
|-<br />
| bgcolor="#E0E0E0" align="center" | Jan 23<br />
| bgcolor="#F0B0B0" align="center" | Rahul Krishna (Northwestern)<br />
| bgcolor="#BCE2FE" TBA|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Jan 30<br />
| bgcolor="#F0B0B0" align="center" | Eric Stubley<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | '''Friday Jan 31, 3-4 pm'''<br />
| bgcolor="#F0B0B0" align="center" | Lillian Pierce <br /> (joint analysis / NT seminar)<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 6<br />
| bgcolor="#F0B0B0" align="center" | Brian Smithling<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 13<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 20<br />
| bgcolor="#F0B0B0" align="center" | Shai Evra<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | Feb 27<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 5<br />
| bgcolor="#F0B0B0" align="center" | Jessica Fintzen<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 12<br />
| bgcolor="#F0B0B0" align="center" | Andrea Dotto<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 19<br />
| bgcolor="#F0B0B0" align="center" | Spring Break<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | March 26<br />
| bgcolor="#F0B0B0" align="center" | Daniel Litt<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 2<br />
| bgcolor="#F0B0B0" align="center" | Caroline Turnage-Butterbaugh<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 9<br />
| bgcolor="#F0B0B0" align="center" | Rahul Dalal<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 16 <br />
| bgcolor="#F0B0B0" align="center" | Aaron Pollack<br />
| bgcolor="#BCE2FE"| <br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 23<br />
| bgcolor="#F0B0B0" align="center" | Jayce Getz<br />
| bgcolor="#BCE2FE"|<br />
|- <br />
| bgcolor="#E0E0E0" align="center" | April 30<br />
| bgcolor="#F0B0B0" align="center" | <br />
| bgcolor="#BCE2FE"|<br />
|- <br />
|}<br />
</center><br />
<br />
<br><br />
<br />
*to be confirmed</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Colloquia&diff=18531Colloquia2019-12-06T21:18:19Z<p>Nagreen: /* Fall 2019 */</p>
<hr />
<div>= Mathematics Colloquium =<br />
<br />
All colloquia are on Fridays at 4:00 pm in Van Vleck B239, '''unless otherwise indicated'''.<br />
<br />
<br />
<br />
==Fall 2019==<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 6 '''Room 911'''<br />
| Will Sawin (Columbia)<br />
| [[#Will Sawin (Columbia) | On Chowla's Conjecture over F_q[T] ]]<br />
| Marshall<br />
|-<br />
|Sept 13<br />
| [https://www.math.ksu.edu/~soibel/ Yan Soibelman] (Kansas State)<br />
|[[#Yan Soibelman (Kansas State)| Riemann-Hilbert correspondence and Fukaya categories ]]<br />
| Caldararu<br />
|<br />
|-<br />
|Sept 16 '''Monday Room 911'''<br />
| [http://mate.dm.uba.ar/~alidick/ Alicia Dickenstein] (Buenos Aires)<br />
|[[#Alicia Dickenstein (Buenos Aires)| Algebra and geometry in the study of enzymatic cascades ]]<br />
| Craciun<br />
|<br />
|-<br />
|Sept 20<br />
| [https://math.duke.edu/~jianfeng/ Jianfeng Lu] (Duke)<br />
|[[#Jianfeng Lu (Duke) | How to "localize" the computation?]]<br />
| Qin<br />
|<br />
|-<br />
|Sept 26 '''Thursday 3-4 pm Room 911'''<br />
| [http://eugeniacheng.com/ Eugenia Cheng] (School of the Art Institute of Chicago)<br />
| [[#Eugenia Cheng (School of the Art Institute of Chicago)| Character vs gender in mathematics and beyond ]]<br />
| Marshall / Friends of UW Madison Libraries<br />
|<br />
|-<br />
|Sept 27<br />
|<br />
|<br />
|-<br />
|Oct 4<br />
|<br />
|<br />
|-<br />
|Oct 11<br />
| Omer Mermelstein (Madison)<br />
| [[#Omer Mermelstein (Madison)| Generic flat pregeometries ]]<br />
|Andrews<br />
|<br />
|-<br />
|Oct 18<br />
| Shamgar Gurevich (Madison)<br />
| [[#Shamgar Gurevich (Madison) | Harmonic Analysis on GL(n) over Finite Fields ]]<br />
| Marshall<br />
|-<br />
|Oct 25<br />
|<br />
|-<br />
|Nov 1<br />
|Elchanan Mossel (MIT)<br />
|Distinguished Lecture<br />
|Roch<br />
|-<br />
|Nov 8<br />
|Jose Rodriguez (UW-Madison)<br />
|[[#Jose Rodriguez (UW-Madison) | Nearest Point Problems and Euclidean Distance Degrees]]<br />
|Erman<br />
|-<br />
|Nov 13 '''Wednesday 4-5pm'''<br />
|Ananth Shankar (MIT)<br />
|Exceptional splitting of abelian surfaces<br />
|-<br />
|Nov 20 '''Wednesday 4-5pm'''<br />
|Franca Hoffman (Caltech)<br />
|[[#Franca Hoffman (Caltech) | Gradient Flows: From PDE to Data Analysis]]<br />
|Smith<br />
|-<br />
|Nov 22<br />
| Jeffrey Danciger (UT Austin)<br />
| [[#Jeffrey Danciger (UT Austin) | "Affine geometry and the Auslander Conjecture"]]<br />
| Kent<br />
|-<br />
|Nov 25 '''Monday 4-5 pm Room 911'''<br />
|Tatyana Shcherbina (Princeton)<br />
| [[# Tatyana Shcherbina (Princeton)| "Random matrix theory and supersymmetry techniques"]]<br />
|Roch<br />
|-<br />
|Nov 29<br />
|Thanksgiving<br />
|<br />
|-<br />
|Dec 2 '''Monday 4-5pm'''<br />
|Tingran Gao (University of Chicago)<br />
| [[#Tingran Gao (University of Chicago)| "Manifold Learning on Fibre Bundles"]]<br />
|Smith<br />
|-<br />
|Dec 4 '''Wednesday 4-5 pm Room 911'''<br />
|Andrew Zimmer (LSU)<br />
|[[#Andrew Zimmer (LSU)| "Intrinsic and extrinsic geometries in several complex variables"]]<br />
|Gong<br />
|-<br />
|Dec 6<br />
|Charlotte Chan (MIT)<br />
|[[#Charlotte Chan (MIT)|"Flag varieties and representations of p-adic groups"]]<br />
|Erman<br />
|-<br />
|Dec 9 '''Monday 4-5 pm'''<br />
|Hui Yu (Columbia)<br />
|[[#Hui Yu (Columbia)|Singular sets in obstacle problems]]<br />
|Tran<br />
|-<br />
|Dec 11 '''Wednesday'''<br />
|Nick Higham (Manchester)<br />
|[[#Nick Higham (Manchester)|LAA lecture: Challenges in Multivalued Matrix Functions]]<br />
|Brualdi<br />
|<br />
|-<br />
|Dec 13 <br />
|Chenxi Wu (Rutgers)<br />
|<br />
|}<br />
<br />
==Spring 2020==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|<br />
|-<br />
|Jan 24<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Jan 29 '''Wednesday 4-5 pm'''<br />
|[https://ajzucker.wordpress.com/ Andy Zucker] (Lyon)<br />
|<br />
|Soskova/Lempp<br />
|<br />
|-<br />
|Jan 31<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 7<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 14<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 21<br />
|Shai Evra (IAS)<br />
|<br />
|Gurevich<br />
|<br />
|-<br />
|Feb 28<br />
|Brett Wick (Washington University, St. Louis)<br />
|<br />
|Seeger<br />
|-<br />
|March 6<br />
| Jessica Fintzen (Michigan)<br />
|<br />
|Marshall<br />
|-<br />
|March 13<br />
|<br />
|-<br />
|March 20<br />
|Spring break<br />
|<br />
|-<br />
|March 27<br />
|(Moduli Spaces Conference)<br />
|<br />
|Boggess, Sankar<br />
|-<br />
|April 3<br />
|Caroline Turnage-Butterbaugh (Carleton College)<br />
|<br />
|Marshall<br />
|-<br />
|April 10<br />
| Sarah Koch (Michigan)<br />
|<br />
| Bruce (WIMAW)<br />
|-<br />
|April 17<br />
|Song Sun (Berkeley)<br />
|<br />
|Huang<br />
|-<br />
|April 24<br />
|Natasa Sesum (Rutgers University)<br />
|<br />
|Angenent<br />
|-<br />
|May 1<br />
|Robert Lazarsfeld (Stony Brook)<br />
|Distinguished lecture<br />
|Erman<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
<br />
===Will Sawin (Columbia)===<br />
<br />
Title: On Chowla's Conjecture over F_q[T]<br />
<br />
Abstract: The Mobius function in number theory is a sequences of 1s, <br />
-1s, and 0s, which is simple to define and closely related to the <br />
prime numbers. Its behavior seems highly random. Chowla's conjecture <br />
is one precise formalization of this randomness, and has seen recent <br />
work by Matomaki, Radziwill, Tao, and Teravainen making progress on <br />
it. In joint work with Mark Shusterman, we modify this conjecture by <br />
replacing the natural numbers parameterizing this sequence with <br />
polynomials over a finite field. Under mild conditions on the finite <br />
field, we are able to prove a strong form of this conjecture. The <br />
proof is based on taking a geometric perspective on the problem, and <br />
succeeds because we are able to simplify the geometry using a trick <br />
based on the strange properties of polynomial derivatives over finite <br />
fields.<br />
<br />
<br />
===Yan Soibelman (Kansas State)===<br />
<br />
Title: Riemann-Hilbert correspondence and Fukaya categories<br />
<br />
Abstract: In this talk I am going to discuss the role of Fukaya categories in the Riemann-Hilbert correspondence<br />
for differential, q-difference and elliptic difference equations in dimension one.<br />
This approach not only gives a unified answer for several versions of the Riemann-Hilbert correspondence but also leads to a natural formulation<br />
of the non-abelian Hodge theory in dimension one. It also explains why periodic monopoles<br />
should appear as harmonic objects in this generalized non-abelian Hodge theory.<br />
All that is a part of the bigger project ``Holomorphic Floer theory",<br />
joint with Maxim Kontsevich.<br />
<br />
<br />
===Alicia Dickenstein (Buenos Aires)===<br />
<br />
Title: Algebra and geometry in the study of enzymatic cascades<br />
<br />
Abstract: In recent years, techniques from computational and real algebraic geometry have been successfully used to address mathematical challenges in systems biology. The algebraic theory of chemical reaction systems aims to understand their dynamic behavior by taking advantage of the inherent algebraic structure in the kinetic equations, and does not need the determination of the parameters a priori, which can be theoretically or practically impossible.<br />
I will give a gentle introduction to general results based on the network structure. In particular, I will describe a general framework for biological systems, called MESSI systems, that describe Modifications of type Enzyme-Substrate or Swap with Intermediates, and include many networks that model post-translational modifications of proteins inside the cell. I will also outline recent methods to address the important question of multistationarity, in particular in the study of enzymatic cascades, and will point out some of the mathematical challenges that arise from this application.<br />
<br />
<br />
=== Jianfeng Lu (Duke) ===<br />
Title: How to ``localize" the computation?<br />
<br />
It is often desirable to restrict the numerical computation to a local region to achieve best balance between accuracy and affordability in scientific computing. It is important to avoid artifacts and guarantee predictable modelling while artificial boundary conditions have to be introduced to restrict the computation. In this talk, we will discuss some recent understanding on how to achieve such local computation in the context of topological edge states and elliptic random media.<br />
<br />
<br />
===Eugenia Cheng (School of the Art Institute of Chicago)===<br />
<br />
Title: Character vs gender in mathematics and beyond<br />
<br />
Abstract: This presentation will be based on my experience of being a female mathematician, and teaching mathematics at all levels from elementary school to grad school. The question of why women are under-represented in mathematics is complex and there are no simple answers, only many many contributing factors. I will focus on character traits, and argue that if we focus on this rather than gender we can have a more productive and less divisive conversation. To try and focus on characters rather than genders I will introduce gender-neutral character adjectives "ingressive" and "congressive" to replace masculine and feminine. I will share my experience of teaching congressive abstract mathematics to art students, in a congressive way, and the possible effects this could have for everyone in mathematics, not just women.<br />
<br />
<br />
===Omer Mermelstein (Madison)===<br />
<br />
Title: Generic flat pregeometries<br />
<br />
Abstract: In model theory, the tamest of structures are the strongly minimal ones -- those in which every equation in a single variable has either finitely many or cofinitely many solution. Algebraically closed fields and vector spaces are the canonical examples. Zilber’s conjecture, later refuted by Hrushovski, states that the source of geometric complexity in a strongly minimal structure must be algebraic. The property of "flatness" (strict gammoid) of a geometry (matroid) is that which guarantees Hrushovski's construction is devoid of any associative structure.<br />
The majority of the talk will explain what flatness is, how it should be thought of, and how closely it relates to hypergraphs and Hrushovski's construction method. Model theory makes an appearance only in the second part, where I will share results pertaining to the specific family of geometries arising from Hrushovski's methods.<br />
<br />
<br />
===Shamgar Gurevich (Madison)===<br />
<br />
Title: Harmonic Analysis on GL(n) over Finite Fields.<br />
<br />
Abstract: There are many formulas that express interesting properties of a finite group G in terms of sums over its characters. For evaluating or estimating these sums, one of the most salient quantities to understand is the character ratio:<br />
<br />
trace(ρ(g)) / dim(ρ),<br />
<br />
for an irreducible representation ρ of G and an element g of G. For example, Diaconis and Shahshahani stated a formula of the mentioned type for analyzing certain random walks on G.<br />
<br />
Recently, we discovered that for classical groups G over finite fields there is a natural invariant of representations that provides strong information on the character ratio. We call this invariant rank. <br />
<br />
This talk will discuss the notion of rank for the group GLn over finite fields, demonstrate how it controls the character ratio, and explain how one can apply the results to verify mixing time and rate for certain random walks.<br />
<br />
This is joint work with Roger Howe (Yale and Texas AM). The numerics for this work was carried by Steve Goldstein (Madison)<br />
<br />
<br />
===Jose Rodriguez (UW-Madison)===<br />
<br />
Abstract: Determining the closest point to a model (subset of Euclidean space) is an important problem in many applications in science,<br />
engineering, and statistics. One way to solve this problem is by minimizing the squared Euclidean distance function using a gradient<br />
descent approach. However, when there are multiple local minima, there is no guarantee of convergence to the true global minimizer.<br />
An alternative method is to determine the critical points of an objective function on the model.<br />
In algebraic statistics, the models of interest are algebraic sets, i.e., solution sets to a system of multivariate polynomial equations. In this situation, the number of critical points of the squared Euclidean distance function on the model’s Zariski closure is a topological invariant called the Euclidean distance degree (ED degree).<br />
In this talk, I will present some models from computer vision and statistics that may be described as algebraic sets. Moreover,<br />
I will describe a topological method for determining a Euclidean distance degree and a numerical algebraic geometry approach for<br />
determining critical points of the squared Euclidean distance function.<br />
<br />
<br />
===Ananth Shankar (MIT)===<br />
<br />
Abstract: An abelian surface 'splits' if it admits a non-trivial map to some elliptic curve. It is well known that the set of abelian surfaces that split are sparse in the set of all abelian surfaces. Nevertheless, we prove that there are infinitely many split abelian surfaces in arithmetic one-parameter families of generically non-split abelian surfaces. I will describe this work, and if time permits, mention generalizations of this result to the setting of K3 surfaces, as well as applications to the dynamics of hecke orbits. This is joint work with Tang, Maulik-Tang, and Shankar-Tang-Tayou.<br />
<br />
<br />
===Franca Hoffman (Caltech)===<br />
<br />
Title: Gradient Flows: From PDE to Data Analysis.<br />
<br />
Abstract: Certain diffusive PDEs can be viewed as infinite-dimensional gradient flows. This fact has led to the development of new tools in various areas of mathematics ranging from PDE theory to data science. In this talk, we focus on two different directions: model-driven approaches and data-driven approaches.<br />
In the first part of the talk we use gradient flows for analyzing non-linear and non-local aggregation-diffusion equations when the corresponding energy functionals are not necessarily convex. Moreover, the gradient flow structure enables us to make connections to well-known functional inequalities, revealing possible links between the optimizers of these inequalities and the equilibria of certain aggregation-diffusion PDEs.<br />
In the second part, we use and develop gradient flow theory to design novel tools for data analysis. We draw a connection between gradient flows and Ensemble Kalman methods for parameter estimation. We introduce the Ensemble Kalman Sampler - a derivative-free methodology for model calibration and uncertainty quantification in expensive black-box models. The interacting particle dynamics underlying our algorithm can be approximated by a novel gradient flow structure in a modified Wasserstein metric which reflects particle correlations. The geometry of this modified Wasserstein metric is of independent theoretical interest.<br />
<br />
<br />
=== Jeffrey Danciger (UT Austin) ===<br />
<br />
Title: Affine geometry and the Auslander Conjecture<br />
<br />
Abstract: The Auslander Conjecture is an analogue of Bieberbach’s theory of Euclidean crystallographic groups in the setting of affine geometry. It predicts that a complete affine manifold (a manifold equipped with a complete torsion-free flat affine connection) which is compact must have virtually solvable fundamental group. The conjecture is known up to dimension six, but is known to fail if the compactness assumption is removed, even in low dimensions. We discuss some history of this conjecture, give some basic examples, and then survey some recent advances in the study of non-compact complete affine manifolds with non-solvable fundamental group. <br />
Tools from the deformation theory of pseudo-Riemannian hyperbolic manifolds and also from higher Teichm&uuml;ller theory will enter the picture.<br />
<br />
<br />
=== Tatyana Shcherbina (Princeton) ===<br />
<br />
Title: Random matrix theory and supersymmetry techniques<br />
<br />
Abstract: Starting from the works of Erdos, Yau, Schlein with coauthors, the significant progress in understanding the universal behavior of many random graph and random matrix models were achieved. However for the random matrices with a special structure our understanding is still very limited. In this talk I am going to overview applications of another approach to the study of the local eigenvalues statistics in random matrix theory based on so-called supersymmetry techniques (SUSY). SUSY approach is based on the representation of the determinant as an integral over the Grassmann (anticommuting) variables. Combining this representation with the representation of an inverse determinant as an integral over the Gaussian complex field, SUSY allows to obtain an integral representation for the main spectral characteristics of random matrices such as limiting density, correlation functions, the resolvent's elements, etc. This method is widely (and successfully) used in the physics literature and is potentially very powerful but the rigorous control of the integral representations, which can be obtained by this method, is quite difficult, and it requires powerful analytic and statistical mechanics tools. In this talk we will discuss some recent progress in application of SUSY to the analysis of local spectral characteristics of the prominent ensemble of random band matrices, i.e. random matrices<br />
whose entries become negligible if their distance from the main diagonal exceeds a certain parameter called the band width. <br />
<br />
<br />
=== Tingran Gao (University of Chicago) ===<br />
<br />
Title: Manifold Learning on Fibre Bundles<br />
<br />
Abstract: Spectral geometry has played an important role in modern geometric data analysis, where the technique is widely known as Laplacian eigenmaps or diffusion maps. In this talk, we present a geometric framework that studies graph representations of complex datasets, where each edge of the graph is equipped with a non-scalar transformation or correspondence. This new framework models such a dataset as a fibre bundle with a connection, and interprets the collection of pairwise functional relations as defining a horizontal diffusion process on the bundle driven by its projection on the base. The eigenstates of this horizontal diffusion process encode the “consistency” among objects in the dataset, and provide a lens through which the geometry of the dataset can be revealed. We demonstrate an application of this geometric framework on evolutionary anthropology.<br />
<br />
<br />
=== Andrew Zimmer (LSU) ===<br />
<br />
Title: Intrinsic and extrinsic geometries in several complex variables<br />
<br />
Abstract: A bounded domain in complex Euclidean space, despite being one of the simplest types of manifolds, has a number of interesting geometric structures. When the domain is pseudoconvex, it has a natural intrinsic geometry: the complete Kaehler-Einstein metric constructed by Cheng-Yau and Mok-Yau. When the domain is smoothly bounded, there is also a natural extrinsic structure: the CR-geometry of the boundary. In this talk, I will describe connections between these intrinsic and extrinsic geometries. Then, I will discuss how these connections can lead to new analytic results.<br />
<br />
=== Charlotte Chan (MIT) ===<br />
<br />
Title: Flag varieties and representations of p-adic groups<br />
<br />
Abstract: In the 1950s, Borel, Weil, and Bott showed that the<br />
irreducible representations of a complex reductive group can be<br />
realized in the cohomology of line bundles on flag varieties. In the<br />
1970s, Deligne and Lusztig constructed a family of subvarieties of<br />
flag varieties whose cohomology realizes the irreducible<br />
representations of reductive groups over finite fields. I will survey<br />
these stories, explain recent progress towards finding geometric<br />
constructions of representations of p-adic groups, and discuss<br />
interactions with the Langlands program.<br />
<br />
=== Hui Yu (Columbia) ===<br />
<br />
Title: Singular sets in obstacle problems<br />
<br />
Abstract: One of the most important free boundary problems is the obstacle problem. The regularity of its free boundary has been studied for over half a century. In this talk, we review some classical results as well as exciting new developments. In particular, we discuss the recent resolution of the regularity of the singular set for the fully nonlinear obstacle problem. This talk is based on a joint work with Ovidiu Savin at Columbia University.<br />
<br />
<br />
=== Nick Higham (Manchester) ===<br />
<br />
Title: Challenges in Multivalued Matrix Functions<br />
<br />
Abstract: In this lecture I will discuss multivalued matrix functions that arise in solving various kinds of matrix equations. The matrix logarithm is the prototypical example, and my first interaction with Hans Schneider was about this function. Another example is the Lambert W function of a matrix, which is much less well known but has been attracting recent interest. A theme of the talk is the importance of choosing appropriate principal values and making sure that the correct choices of signs and branches are used,<br />
both in theory and in computation. I will give examples where incorrect results have previously been obtained.<br />
<br />
I focus on matrix inverse trigonometric and inverse hyperbolic functions, beginning by investigating existence and characterization. Turning to the principal values, various functional identities are derived, some of which are new even in the scalar case, including a “round trip” formula that relates acos(cos A) to A and similar formulas for the other inverse functions. Key tools used in the derivations are the matrix unwinding function and the matrix sign function.<br />
<br />
A new inverse scaling and squaring type algorithm employing a Schur decomposition and variable-degree Pade approximation is derived for computing acos, and it is shown how it can also be used to compute asin, acosh, and asinh.<br />
<br />
== Future Colloquia ==<br />
[[Colloquia/Fall 2020| Fall 2020]]<br />
<br />
== Past Colloquia ==<br />
<br />
[[Colloquia/Blank|Blank]]<br />
<br />
[[Colloquia/Spring2019|Spring 2019]]<br />
<br />
[[Colloquia/Fall2018|Fall 2018]]<br />
<br />
[[Colloquia/Spring2018|Spring 2018]]<br />
<br />
[[Colloquia/Fall2017|Fall 2017]]<br />
<br />
[[Colloquia/Spring2017|Spring 2017]]<br />
<br />
[[Archived Fall 2016 Colloquia|Fall 2016]]<br />
<br />
[[Colloquia/Spring2016|Spring 2016]]<br />
<br />
[[Colloquia/Fall2015|Fall 2015]]<br />
<br />
[[Colloquia/Spring2014|Spring 2015]]<br />
<br />
[[Colloquia/Fall2014|Fall 2014]]<br />
<br />
[[Colloquia/Spring2014|Spring 2014]]<br />
<br />
[[Colloquia/Fall2013|Fall 2013]]<br />
<br />
[[Colloquia 2012-2013|Spring 2013]]<br />
<br />
[[Colloquia 2012-2013#Fall 2012|Fall 2012]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Colloquia&diff=18530Colloquia2019-12-06T21:16:33Z<p>Nagreen: /* Fall 2019 */</p>
<hr />
<div>= Mathematics Colloquium =<br />
<br />
All colloquia are on Fridays at 4:00 pm in Van Vleck B239, '''unless otherwise indicated'''.<br />
<br />
<br />
<br />
==Fall 2019==<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 6 '''Room 911'''<br />
| Will Sawin (Columbia)<br />
| [[#Will Sawin (Columbia) | On Chowla's Conjecture over F_q[T] ]]<br />
| Marshall<br />
|-<br />
|Sept 13<br />
| [https://www.math.ksu.edu/~soibel/ Yan Soibelman] (Kansas State)<br />
|[[#Yan Soibelman (Kansas State)| Riemann-Hilbert correspondence and Fukaya categories ]]<br />
| Caldararu<br />
|<br />
|-<br />
|Sept 16 '''Monday Room 911'''<br />
| [http://mate.dm.uba.ar/~alidick/ Alicia Dickenstein] (Buenos Aires)<br />
|[[#Alicia Dickenstein (Buenos Aires)| Algebra and geometry in the study of enzymatic cascades ]]<br />
| Craciun<br />
|<br />
|-<br />
|Sept 20<br />
| [https://math.duke.edu/~jianfeng/ Jianfeng Lu] (Duke)<br />
|[[#Jianfeng Lu (Duke) | How to "localize" the computation?]]<br />
| Qin<br />
|<br />
|-<br />
|Sept 26 '''Thursday 3-4 pm Room 911'''<br />
| [http://eugeniacheng.com/ Eugenia Cheng] (School of the Art Institute of Chicago)<br />
| [[#Eugenia Cheng (School of the Art Institute of Chicago)| Character vs gender in mathematics and beyond ]]<br />
| Marshall / Friends of UW Madison Libraries<br />
|<br />
|-<br />
|Sept 27<br />
|<br />
|<br />
|-<br />
|Oct 4<br />
|<br />
|<br />
|-<br />
|Oct 11<br />
| Omer Mermelstein (Madison)<br />
| [[#Omer Mermelstein (Madison)| Generic flat pregeometries ]]<br />
|Andrews<br />
|<br />
|-<br />
|Oct 18<br />
| Shamgar Gurevich (Madison)<br />
| [[#Shamgar Gurevich (Madison) | Harmonic Analysis on GL(n) over Finite Fields ]]<br />
| Marshall<br />
|-<br />
|Oct 25<br />
|<br />
|-<br />
|Nov 1<br />
|Elchanan Mossel (MIT)<br />
|Distinguished Lecture<br />
|Roch<br />
|-<br />
|Nov 8<br />
|Jose Rodriguez (UW-Madison)<br />
|[[#Jose Rodriguez (UW-Madison) | Nearest Point Problems and Euclidean Distance Degrees]]<br />
|Erman<br />
|-<br />
|Nov 13 '''Wednesday 4-5pm'''<br />
|Ananth Shankar (MIT)<br />
|Exceptional splitting of abelian surfaces<br />
|-<br />
|Nov 20 '''Wednesday 4-5pm'''<br />
|Franca Hoffman (Caltech)<br />
|[[#Franca Hoffman (Caltech) | Gradient Flows: From PDE to Data Analysis]]<br />
|Smith<br />
|-<br />
|Nov 22<br />
| Jeffrey Danciger (UT Austin)<br />
| [[#Jeffrey Danciger (UT Austin) | "Affine geometry and the Auslander Conjecture"]]<br />
| Kent<br />
|-<br />
|Nov 25 '''Monday 4-5 pm Room 911'''<br />
|Tatyana Shcherbina (Princeton)<br />
| [[# Tatyana Shcherbina (Princeton)| "Random matrix theory and supersymmetry techniques"]]<br />
|Roch<br />
|-<br />
|Nov 29<br />
|Thanksgiving<br />
|<br />
|-<br />
|Dec 2 '''Monday 4-5pm'''<br />
|Tingran Gao (University of Chicago)<br />
| [[#Tingran Gao (University of Chicago)| "Manifold Learning on Fibre Bundles"]]<br />
|Smith<br />
|-<br />
|Dec 4 '''Wednesday 4-5 pm Room 911'''<br />
|Andrew Zimmer (LSU)<br />
|[[#Andrew Zimmer (LSU)| "Intrinsic and extrinsic geometries in several complex variables"]]<br />
|Gong<br />
|-<br />
|Dec 6<br />
|Charlotte Chan (MIT)<br />
|[[#Charlotte Chan (MIT)|"Flag varieties and representations of p-adic groups"]]<br />
|Erman<br />
|-<br />
|Dec 9 '''Monday 4-5 pm'''<br />
|Hui Yu (Columbia)<br />
|[[#Hui Yu (Columbia)|Singular sets in obstacle problems]]<br />
|Tran<br />
|-<br />
|Dec 11 '''Wednesday'''<br />
|Nick Higham (Manchester)<br />
|[[#Nick Higham (Manchester)|LAA lecture: Challenges in Multivalued Matrix Functions]]<br />
|Brualdi<br />
|<br />
|-<br />
|Dec 13 <br />
|Chenxi Wu<br />
|<br />
|}<br />
<br />
==Spring 2020==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|<br />
|-<br />
|Jan 24<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Jan 29 '''Wednesday 4-5 pm'''<br />
|[https://ajzucker.wordpress.com/ Andy Zucker] (Lyon)<br />
|<br />
|Soskova/Lempp<br />
|<br />
|-<br />
|Jan 31<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 7<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 14<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Feb 21<br />
|Shai Evra (IAS)<br />
|<br />
|Gurevich<br />
|<br />
|-<br />
|Feb 28<br />
|Brett Wick (Washington University, St. Louis)<br />
|<br />
|Seeger<br />
|-<br />
|March 6<br />
| Jessica Fintzen (Michigan)<br />
|<br />
|Marshall<br />
|-<br />
|March 13<br />
|<br />
|-<br />
|March 20<br />
|Spring break<br />
|<br />
|-<br />
|March 27<br />
|(Moduli Spaces Conference)<br />
|<br />
|Boggess, Sankar<br />
|-<br />
|April 3<br />
|Caroline Turnage-Butterbaugh (Carleton College)<br />
|<br />
|Marshall<br />
|-<br />
|April 10<br />
| Sarah Koch (Michigan)<br />
|<br />
| Bruce (WIMAW)<br />
|-<br />
|April 17<br />
|Song Sun (Berkeley)<br />
|<br />
|Huang<br />
|-<br />
|April 24<br />
|Natasa Sesum (Rutgers University)<br />
|<br />
|Angenent<br />
|-<br />
|May 1<br />
|Robert Lazarsfeld (Stony Brook)<br />
|Distinguished lecture<br />
|Erman<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
<br />
===Will Sawin (Columbia)===<br />
<br />
Title: On Chowla's Conjecture over F_q[T]<br />
<br />
Abstract: The Mobius function in number theory is a sequences of 1s, <br />
-1s, and 0s, which is simple to define and closely related to the <br />
prime numbers. Its behavior seems highly random. Chowla's conjecture <br />
is one precise formalization of this randomness, and has seen recent <br />
work by Matomaki, Radziwill, Tao, and Teravainen making progress on <br />
it. In joint work with Mark Shusterman, we modify this conjecture by <br />
replacing the natural numbers parameterizing this sequence with <br />
polynomials over a finite field. Under mild conditions on the finite <br />
field, we are able to prove a strong form of this conjecture. The <br />
proof is based on taking a geometric perspective on the problem, and <br />
succeeds because we are able to simplify the geometry using a trick <br />
based on the strange properties of polynomial derivatives over finite <br />
fields.<br />
<br />
<br />
===Yan Soibelman (Kansas State)===<br />
<br />
Title: Riemann-Hilbert correspondence and Fukaya categories<br />
<br />
Abstract: In this talk I am going to discuss the role of Fukaya categories in the Riemann-Hilbert correspondence<br />
for differential, q-difference and elliptic difference equations in dimension one.<br />
This approach not only gives a unified answer for several versions of the Riemann-Hilbert correspondence but also leads to a natural formulation<br />
of the non-abelian Hodge theory in dimension one. It also explains why periodic monopoles<br />
should appear as harmonic objects in this generalized non-abelian Hodge theory.<br />
All that is a part of the bigger project ``Holomorphic Floer theory",<br />
joint with Maxim Kontsevich.<br />
<br />
<br />
===Alicia Dickenstein (Buenos Aires)===<br />
<br />
Title: Algebra and geometry in the study of enzymatic cascades<br />
<br />
Abstract: In recent years, techniques from computational and real algebraic geometry have been successfully used to address mathematical challenges in systems biology. The algebraic theory of chemical reaction systems aims to understand their dynamic behavior by taking advantage of the inherent algebraic structure in the kinetic equations, and does not need the determination of the parameters a priori, which can be theoretically or practically impossible.<br />
I will give a gentle introduction to general results based on the network structure. In particular, I will describe a general framework for biological systems, called MESSI systems, that describe Modifications of type Enzyme-Substrate or Swap with Intermediates, and include many networks that model post-translational modifications of proteins inside the cell. I will also outline recent methods to address the important question of multistationarity, in particular in the study of enzymatic cascades, and will point out some of the mathematical challenges that arise from this application.<br />
<br />
<br />
=== Jianfeng Lu (Duke) ===<br />
Title: How to ``localize" the computation?<br />
<br />
It is often desirable to restrict the numerical computation to a local region to achieve best balance between accuracy and affordability in scientific computing. It is important to avoid artifacts and guarantee predictable modelling while artificial boundary conditions have to be introduced to restrict the computation. In this talk, we will discuss some recent understanding on how to achieve such local computation in the context of topological edge states and elliptic random media.<br />
<br />
<br />
===Eugenia Cheng (School of the Art Institute of Chicago)===<br />
<br />
Title: Character vs gender in mathematics and beyond<br />
<br />
Abstract: This presentation will be based on my experience of being a female mathematician, and teaching mathematics at all levels from elementary school to grad school. The question of why women are under-represented in mathematics is complex and there are no simple answers, only many many contributing factors. I will focus on character traits, and argue that if we focus on this rather than gender we can have a more productive and less divisive conversation. To try and focus on characters rather than genders I will introduce gender-neutral character adjectives "ingressive" and "congressive" to replace masculine and feminine. I will share my experience of teaching congressive abstract mathematics to art students, in a congressive way, and the possible effects this could have for everyone in mathematics, not just women.<br />
<br />
<br />
===Omer Mermelstein (Madison)===<br />
<br />
Title: Generic flat pregeometries<br />
<br />
Abstract: In model theory, the tamest of structures are the strongly minimal ones -- those in which every equation in a single variable has either finitely many or cofinitely many solution. Algebraically closed fields and vector spaces are the canonical examples. Zilber’s conjecture, later refuted by Hrushovski, states that the source of geometric complexity in a strongly minimal structure must be algebraic. The property of "flatness" (strict gammoid) of a geometry (matroid) is that which guarantees Hrushovski's construction is devoid of any associative structure.<br />
The majority of the talk will explain what flatness is, how it should be thought of, and how closely it relates to hypergraphs and Hrushovski's construction method. Model theory makes an appearance only in the second part, where I will share results pertaining to the specific family of geometries arising from Hrushovski's methods.<br />
<br />
<br />
===Shamgar Gurevich (Madison)===<br />
<br />
Title: Harmonic Analysis on GL(n) over Finite Fields.<br />
<br />
Abstract: There are many formulas that express interesting properties of a finite group G in terms of sums over its characters. For evaluating or estimating these sums, one of the most salient quantities to understand is the character ratio:<br />
<br />
trace(ρ(g)) / dim(ρ),<br />
<br />
for an irreducible representation ρ of G and an element g of G. For example, Diaconis and Shahshahani stated a formula of the mentioned type for analyzing certain random walks on G.<br />
<br />
Recently, we discovered that for classical groups G over finite fields there is a natural invariant of representations that provides strong information on the character ratio. We call this invariant rank. <br />
<br />
This talk will discuss the notion of rank for the group GLn over finite fields, demonstrate how it controls the character ratio, and explain how one can apply the results to verify mixing time and rate for certain random walks.<br />
<br />
This is joint work with Roger Howe (Yale and Texas AM). The numerics for this work was carried by Steve Goldstein (Madison)<br />
<br />
<br />
===Jose Rodriguez (UW-Madison)===<br />
<br />
Abstract: Determining the closest point to a model (subset of Euclidean space) is an important problem in many applications in science,<br />
engineering, and statistics. One way to solve this problem is by minimizing the squared Euclidean distance function using a gradient<br />
descent approach. However, when there are multiple local minima, there is no guarantee of convergence to the true global minimizer.<br />
An alternative method is to determine the critical points of an objective function on the model.<br />
In algebraic statistics, the models of interest are algebraic sets, i.e., solution sets to a system of multivariate polynomial equations. In this situation, the number of critical points of the squared Euclidean distance function on the model’s Zariski closure is a topological invariant called the Euclidean distance degree (ED degree).<br />
In this talk, I will present some models from computer vision and statistics that may be described as algebraic sets. Moreover,<br />
I will describe a topological method for determining a Euclidean distance degree and a numerical algebraic geometry approach for<br />
determining critical points of the squared Euclidean distance function.<br />
<br />
<br />
===Ananth Shankar (MIT)===<br />
<br />
Abstract: An abelian surface 'splits' if it admits a non-trivial map to some elliptic curve. It is well known that the set of abelian surfaces that split are sparse in the set of all abelian surfaces. Nevertheless, we prove that there are infinitely many split abelian surfaces in arithmetic one-parameter families of generically non-split abelian surfaces. I will describe this work, and if time permits, mention generalizations of this result to the setting of K3 surfaces, as well as applications to the dynamics of hecke orbits. This is joint work with Tang, Maulik-Tang, and Shankar-Tang-Tayou.<br />
<br />
<br />
===Franca Hoffman (Caltech)===<br />
<br />
Title: Gradient Flows: From PDE to Data Analysis.<br />
<br />
Abstract: Certain diffusive PDEs can be viewed as infinite-dimensional gradient flows. This fact has led to the development of new tools in various areas of mathematics ranging from PDE theory to data science. In this talk, we focus on two different directions: model-driven approaches and data-driven approaches.<br />
In the first part of the talk we use gradient flows for analyzing non-linear and non-local aggregation-diffusion equations when the corresponding energy functionals are not necessarily convex. Moreover, the gradient flow structure enables us to make connections to well-known functional inequalities, revealing possible links between the optimizers of these inequalities and the equilibria of certain aggregation-diffusion PDEs.<br />
In the second part, we use and develop gradient flow theory to design novel tools for data analysis. We draw a connection between gradient flows and Ensemble Kalman methods for parameter estimation. We introduce the Ensemble Kalman Sampler - a derivative-free methodology for model calibration and uncertainty quantification in expensive black-box models. The interacting particle dynamics underlying our algorithm can be approximated by a novel gradient flow structure in a modified Wasserstein metric which reflects particle correlations. The geometry of this modified Wasserstein metric is of independent theoretical interest.<br />
<br />
<br />
=== Jeffrey Danciger (UT Austin) ===<br />
<br />
Title: Affine geometry and the Auslander Conjecture<br />
<br />
Abstract: The Auslander Conjecture is an analogue of Bieberbach’s theory of Euclidean crystallographic groups in the setting of affine geometry. It predicts that a complete affine manifold (a manifold equipped with a complete torsion-free flat affine connection) which is compact must have virtually solvable fundamental group. The conjecture is known up to dimension six, but is known to fail if the compactness assumption is removed, even in low dimensions. We discuss some history of this conjecture, give some basic examples, and then survey some recent advances in the study of non-compact complete affine manifolds with non-solvable fundamental group. <br />
Tools from the deformation theory of pseudo-Riemannian hyperbolic manifolds and also from higher Teichm&uuml;ller theory will enter the picture.<br />
<br />
<br />
=== Tatyana Shcherbina (Princeton) ===<br />
<br />
Title: Random matrix theory and supersymmetry techniques<br />
<br />
Abstract: Starting from the works of Erdos, Yau, Schlein with coauthors, the significant progress in understanding the universal behavior of many random graph and random matrix models were achieved. However for the random matrices with a special structure our understanding is still very limited. In this talk I am going to overview applications of another approach to the study of the local eigenvalues statistics in random matrix theory based on so-called supersymmetry techniques (SUSY). SUSY approach is based on the representation of the determinant as an integral over the Grassmann (anticommuting) variables. Combining this representation with the representation of an inverse determinant as an integral over the Gaussian complex field, SUSY allows to obtain an integral representation for the main spectral characteristics of random matrices such as limiting density, correlation functions, the resolvent's elements, etc. This method is widely (and successfully) used in the physics literature and is potentially very powerful but the rigorous control of the integral representations, which can be obtained by this method, is quite difficult, and it requires powerful analytic and statistical mechanics tools. In this talk we will discuss some recent progress in application of SUSY to the analysis of local spectral characteristics of the prominent ensemble of random band matrices, i.e. random matrices<br />
whose entries become negligible if their distance from the main diagonal exceeds a certain parameter called the band width. <br />
<br />
<br />
=== Tingran Gao (University of Chicago) ===<br />
<br />
Title: Manifold Learning on Fibre Bundles<br />
<br />
Abstract: Spectral geometry has played an important role in modern geometric data analysis, where the technique is widely known as Laplacian eigenmaps or diffusion maps. In this talk, we present a geometric framework that studies graph representations of complex datasets, where each edge of the graph is equipped with a non-scalar transformation or correspondence. This new framework models such a dataset as a fibre bundle with a connection, and interprets the collection of pairwise functional relations as defining a horizontal diffusion process on the bundle driven by its projection on the base. The eigenstates of this horizontal diffusion process encode the “consistency” among objects in the dataset, and provide a lens through which the geometry of the dataset can be revealed. We demonstrate an application of this geometric framework on evolutionary anthropology.<br />
<br />
<br />
=== Andrew Zimmer (LSU) ===<br />
<br />
Title: Intrinsic and extrinsic geometries in several complex variables<br />
<br />
Abstract: A bounded domain in complex Euclidean space, despite being one of the simplest types of manifolds, has a number of interesting geometric structures. When the domain is pseudoconvex, it has a natural intrinsic geometry: the complete Kaehler-Einstein metric constructed by Cheng-Yau and Mok-Yau. When the domain is smoothly bounded, there is also a natural extrinsic structure: the CR-geometry of the boundary. In this talk, I will describe connections between these intrinsic and extrinsic geometries. Then, I will discuss how these connections can lead to new analytic results.<br />
<br />
=== Charlotte Chan (MIT) ===<br />
<br />
Title: Flag varieties and representations of p-adic groups<br />
<br />
Abstract: In the 1950s, Borel, Weil, and Bott showed that the<br />
irreducible representations of a complex reductive group can be<br />
realized in the cohomology of line bundles on flag varieties. In the<br />
1970s, Deligne and Lusztig constructed a family of subvarieties of<br />
flag varieties whose cohomology realizes the irreducible<br />
representations of reductive groups over finite fields. I will survey<br />
these stories, explain recent progress towards finding geometric<br />
constructions of representations of p-adic groups, and discuss<br />
interactions with the Langlands program.<br />
<br />
=== Hui Yu (Columbia) ===<br />
<br />
Title: Singular sets in obstacle problems<br />
<br />
Abstract: One of the most important free boundary problems is the obstacle problem. The regularity of its free boundary has been studied for over half a century. In this talk, we review some classical results as well as exciting new developments. In particular, we discuss the recent resolution of the regularity of the singular set for the fully nonlinear obstacle problem. This talk is based on a joint work with Ovidiu Savin at Columbia University.<br />
<br />
<br />
=== Nick Higham (Manchester) ===<br />
<br />
Title: Challenges in Multivalued Matrix Functions<br />
<br />
Abstract: In this lecture I will discuss multivalued matrix functions that arise in solving various kinds of matrix equations. The matrix logarithm is the prototypical example, and my first interaction with Hans Schneider was about this function. Another example is the Lambert W function of a matrix, which is much less well known but has been attracting recent interest. A theme of the talk is the importance of choosing appropriate principal values and making sure that the correct choices of signs and branches are used,<br />
both in theory and in computation. I will give examples where incorrect results have previously been obtained.<br />
<br />
I focus on matrix inverse trigonometric and inverse hyperbolic functions, beginning by investigating existence and characterization. Turning to the principal values, various functional identities are derived, some of which are new even in the scalar case, including a “round trip” formula that relates acos(cos A) to A and similar formulas for the other inverse functions. Key tools used in the derivations are the matrix unwinding function and the matrix sign function.<br />
<br />
A new inverse scaling and squaring type algorithm employing a Schur decomposition and variable-degree Pade approximation is derived for computing acos, and it is shown how it can also be used to compute asin, acosh, and asinh.<br />
<br />
== Future Colloquia ==<br />
[[Colloquia/Fall 2020| Fall 2020]]<br />
<br />
== Past Colloquia ==<br />
<br />
[[Colloquia/Blank|Blank]]<br />
<br />
[[Colloquia/Spring2019|Spring 2019]]<br />
<br />
[[Colloquia/Fall2018|Fall 2018]]<br />
<br />
[[Colloquia/Spring2018|Spring 2018]]<br />
<br />
[[Colloquia/Fall2017|Fall 2017]]<br />
<br />
[[Colloquia/Spring2017|Spring 2017]]<br />
<br />
[[Archived Fall 2016 Colloquia|Fall 2016]]<br />
<br />
[[Colloquia/Spring2016|Spring 2016]]<br />
<br />
[[Colloquia/Fall2015|Fall 2015]]<br />
<br />
[[Colloquia/Spring2014|Spring 2015]]<br />
<br />
[[Colloquia/Fall2014|Fall 2014]]<br />
<br />
[[Colloquia/Spring2014|Spring 2014]]<br />
<br />
[[Colloquia/Fall2013|Fall 2013]]<br />
<br />
[[Colloquia 2012-2013|Spring 2013]]<br />
<br />
[[Colloquia 2012-2013#Fall 2012|Fall 2012]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Using_ssh&diff=18425Using ssh2019-11-15T22:21:03Z<p>Nagreen: </p>
<hr />
<div>== Using ssh to Access Math Department Resources==<br />
<br />
The University of Wisconsin-Madison Department of Mathematics maintains two login servers for ssh connections from outside the department.<br />
<br />
# login0.math.wisc.edu: To connect to this server, you must have an IP address that corresponds to a wisc.edu host address. You can use the campus wireless or a VPN client to get a wisc.edu IP address. Other names for this server are bing.math.wisc.edu and login.math.wisc.edu. Any of these names should work.<br />
# login1.math.wisc.edu. To connect to this server, you must use an ssh key. For instructions on using an ssh key, see below. Another name for this server is abel.math.wisc.edu.<br />
<br />
To access Math Department resources via ssh, you must first use an ssh client to connect to either login0 or login1. You can then ssh to the system of your choice within the department.<br />
<br />
For example, suppose you wished to run a sage program on one of the research servers. For simplicity sake, the research servers have aliases (nicknames) magma0, magma1, ..., magma19, with the more powerful machines having the lowest numbers.<br />
<br />
To start your sage program, you might use an ssh client on your laptop to connect to login0.math.wisc.edu then run ssh again on login0 to connect to magma0. Please do not run research programs on login0 or login1. While these machines may have all the tools necessary to test programs, they are not powerful enough to handle more than the most trivial of tasks. If you run a program that uses a lot of resources on login0 or login1, you may prevent users (including yourself) from accessing these machines.<br />
<br />
A different set of instructions is also available here: [https://docs.google.com/a/wisc.edu/viewer?a=v&pid=sites&srcid=d2lzYy5lZHV8bWF0aC1pbnRyYW5ldHxneDo1NDg5ZmE4MzZhMzVkNThk]<br />
<br />
===Generating an ssh Key===<br />
<br />
The IT staff recommends that you generate an ssh key to use when moving from one machine to another within the department network. Using an ssh key is both easier and more secure than retyping your password when you are moving from one Math Department machine to another. To use an ssh key, do the following.<br />
<br />
# Log onto any Linux workstation or research server in the department. You can use ssh as explained above to connect to login0 or login1 for this purpose.<br />
# At the prompt, type "ssh-keygen". Accept the default values. You need not enter a passphrase, so just press enter.<br />
# Add the key you just generated to your authorized_keys file. Type, "cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys"<br />
# To test, type, "ssh magma0". You should be connected to magma0 without having to retype your password.<br />
<br />
Note: The login server login1.math.wisc.edu requires the use of ssh keys to connect. You can use this same ssh key for that purpose. Instructions for doing so are different for each ssh client and are therefore beyond the scope of this document. Consult your client's documentation (or google) or ask a member of the IT staff for assistance.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Madison_Math_Circle&diff=17812Madison Math Circle2019-09-11T14:18:52Z<p>Nagreen: /* Meetings for Fall 2019 */</p>
<hr />
<div>[[Image:logo.png|right|440px]]<br />
<br />
For the site in Spanish, visit [[Math Circle de Madison]]<br />
=What is a Math Circle?=<br />
The Madison Math Circle is a weekly series of mathematically based activities aimed at interested middle school and high school students. It is an outreach program organized by the UW Math Department. Our goal is to provide a taste of exciting ideas in math and science. In the past we've had talks about plasma and weather in outer space, video game graphics, and encryption. In the sessions, students (and parents) are often asked to explore problems on their own, with the presenter facilitating a discussion. The talks are independent of one another, so new students are welcome at any point.<br />
<br />
The level of the audience varies quite widely, including a mix of middle school and high school students, and the speakers generally address this by considering subjects that will be interesting for a wide range of students.<br />
<br />
<br />
[[Image: MathCircle_2.jpg|500px]] [[Image: MathCircle_4.jpg|500px]] <br />
<br />
<br />
After each talk we'll have pizza provided by the Mathematics Department, and students will have an opportunity to mingle and chat with the speaker and with other participants, to ask questions about some of the topics that have been discussed, and also about college, careers in science, etc.<br />
<br />
'''The Madison Math circle was featured in Wisconsin State Journal:''' [http://host.madison.com/wsj/news/local/education/local_schools/school-spotlight-madison-math-circle-gives-young-students-a-taste/article_77f5c042-0b3d-11e1-ba5f-001cc4c03286.html check it out]!<br />
<br />
=All right, I want to come!=<br />
<br />
We have a weekly meeting, <b>Monday at 6pm in 3255 Helen C White Library</b>, during the school year. <b>New students are welcome at any point! </b> There is no fee and the talks are independent of one another, so you can just show up any week, but we ask all participants to take a moment to register by following the link below:<br />
<br />
[https://uwmadison.co1.qualtrics.com/jfe/form/SV_e9WdAs2SXNurWFD '''Math Circle Registration Form''']<br />
<br />
All of your information is kept private, and is only used by the Madison Math Circle organizer to help run the Circle. <br />
<br />
If you are a student, we hope you will tell other interested students about these talks, and speak with your parents or with your teacher about organizing a car pool to the UW campus. If you are a parent or a teacher, we hope you'll tell your students about these talks and organize a car pool to the UW (all talks take place in 3255 Helen C White Library, on the UW-Madison campus, right next to the Memorial Union).<br />
<br />
<br />
==Directions and parking==<br />
Our meetings are held on the 3rd floor of Helen C. White Hall in room 3255.<br />
<br />
<div class="center" style="width:auto; margin-left:auto; margin-right:auto;"><br />
[[File: Helencwhitemap.png|400px]]</div><br />
<br />
'''Parking.''' Parking on campus is rather limited. Here is as list of some options:<br />
<br />
*There is a parking garage in the basement of Helen C. White, with an hourly rate. Enter from Park Street.<br />
*A 0.5 mile walk to Helen C. White Hall via [http://goo.gl/cxTzJY these directions], many spots ('''free starting 4:30pm''') [http://goo.gl/maps/Gkx1C in Lot 26 along Observatory Drive].<br />
*A 0.3 mile walk to Helen C. White Hall via [http://goo.gl/yMJIRd these directions], many spots ('''free starting 4:30pm''') [http://goo.gl/maps/vs17X in Lot 34]. <br />
*A 0.3 mile walk to Helen C. White Hall via [http://goo.gl/yMJIRd these directions], 2 metered spots (25 minute max) [http://goo.gl/maps/ukTcu in front of Lathrop Hall].<br />
*A 0.2 mile walk to Helen C. White Hall via [http://goo.gl/b8pdk2 these directions] 6 metered spots (25 minute max) around [http://goo.gl/maps/6EAnc the loop in front of Chadbourne Hall] .<br />
*For more information, see the [http://transportation.wisc.edu/parking/parking.aspx UW-Madison Parking Info website].<br />
<br />
==Email list==<br />
The best way to keep up to date with the what is going is by signing up for our email list. Send an empty email to join-mathcircle@lists.wisc.edu<br />
<br />
==Contact the organizers==<br />
The Madison Math Circle is organized by a group of professors and graduate students from the [http://www.math.wisc.edu Department of Mathematics] at the UW-Madison. If you have any questions, suggestions for topics, or so on, just email the '''organizers''' [mailto:mathcircleorganizers@lists.wisc.edu here]. We are always interested in feedback!<br />
<center><br />
<gallery widths=480px heights=240px mode="packed"><br />
File:de.jpg|[https://www.math.wisc.edu/~derman/ Prof. Daniel Erman]<br />
File:Betsy.jpg|[http://www.math.wisc.edu/~stovall/ Prof. Betsy Stovall]<br />
</gallery><br />
<br />
<gallery widths=500px heights=250px mode="packed"><br />
File:juliettebruce.jpg|[http://www.math.wisc.edu/~juliettebruce/ Juliette Bruce]<br />
File:Ee.jpg|[http://www.math.wisc.edu/~evaelduque/ Eva Elduque]<br />
File:mrjulian.jpg|[http://www.math.wisc.edu/~mrjulian/ Ryan Julian]<br />
File:soumyasankar.jpg|[http://www.math.wisc.edu/~soumyasankar Soumya Sankar]<br />
</gallery><br />
</center><br />
<br />
==Donations==<br />
Please consider donating to the Madison Math Circle. As noted in our [https://www.math.wisc.edu/wiki/images/Math_Circle_Newsletter.pdf annual report], our main costs consist of pizza and occasional supplies for the speakers. So far our costs have been covered by donations from the UW Mathematics Department as well as a generous gifts from a private donor. But our costs are rising, primarily because this year we expect to hold more meetings than in any previous year. In fact, this year, we expect to spend at least $2500 on pizza and supplies alone.<br />
<br />
So please consider donating to support your math circle! The easiest way to donate is to go to the link:<br />
<br />
[http://www.math.wisc.edu/donate Online Donation Link]<br />
<br />
There are instructions on that page for donating to the Math Department. <b> Be sure and add a Gift Note saying that the donation is intended for the "Madison Math Circle"!</b> The money goes into the Mathematics Department Annual Fund and is routed through the University of Wisconsin Foundation, which is convenient for record-keeping, etc.<br />
<br />
Alternately, you can bring a check to one of the Math Circle Meetings. If you write a check, be sure to make it payable to the "WFAA" and add the note "Math Circle Donation" on the check. <br />
<br />
Or you can just pay in cash, and we'll give you a receipt.<br />
<br />
==Help us grow!==<br />
If you like Math Circle, please help us continue to grow! Students, parents, and teachers can help by:<br />
*Posting our [https://www.math.wisc.edu/wiki/images/MMC_Flyer_2016.pdf '''flyer'''] at schools or anywhere that might have interested students<br />
*Discussing the Math Circle with students, parents, teachers, administrators, and others<br />
*Making an announcement about Math Circle at PTO meetings<br />
*Donating to Math Circle<br />
Contact the organizers if you have questions or your own ideas about how to help out.<br />
<br />
=Meetings for Fall 2019=<br />
<br />
<center><br />
<br />
Talks start at '''6pm in room 3255 of Helen C. White Library''', unless otherwise noted.<br />
<br />
{| style="color:black; font-size:120%" border="1" cellpadding="14" cellspacing="0"<br />
|-<br />
! colspan="3" style="background: #e8b2b2;" align="center" | Fall 2019<br />
|-<br />
! Date !! Speaker !! Topic<br />
|-<br />
| September 23, 2019 || TBD || TBD<br />
|-<br />
| September 30, 2019 || TBD || TBD<br />
|-<br />
| October 7, 2019 || TBD || TBD<br />
|-<br />
| October 14, 2019 || TBD || TBD<br />
|-<br />
| October 21, 2019 || TBD || TBD<br />
|-<br />
| October 28, 2019 || TBD || TBD<br />
|-<br />
| November 4, 2019 || TBD || TBD<br />
|-<br />
| November 11, 2019 || TBD || TBD<br />
|-<br />
| November 18, 2019 || TBD || TBD<br />
|-<br />
|}<br />
<br />
</center><br />
<br />
=Off-Site Meetings=<br />
<br />
We will hold some Math Circle meetings at local high schools on early release days. If you are interesting in having us come to your high school, please contact us! TBD.<br />
<br />
<br />
<center><br />
<br />
</center><br />
<br />
=Useful Resources=<br />
==Annual Reports==<br />
[https://www.math.wisc.edu/wiki/images/Math_Circle_Newsletter.pdf 2013-2014 Annual Report]<br />
<br />
== Archived Abstracts ==<br />
<br />
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_2016-2017 2016 - 2017 Math Circle Page]<br />
<br />
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2016-2017 2016 - 2017 Abstracts]<br />
<br />
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_2015-2016 2015 - 2016 Math Circle Page]<br />
<br />
[https://www.math.wisc.edu/wiki/index.php/Math_Circle_de_Madison_2015-2016 2015 - 2016 Math Circle Page (Spanish)]<br />
<br />
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2015-2016 2015 - 2015 Abstracts]<br />
<br />
[[Archived Math Circle Material]]<br />
<br />
==Link for presenters (in progress)==<br />
[https://www.math.wisc.edu/wiki/index.php/Math_Circle_Presentations Advice For Math Circle Presenters]<br />
<br />
[http://www.mathcircles.org/math-problems-2/ Sample Talk Ideas/Problems]<br />
<br />
[http://www.mathcircles.org/content/circle-box "Circle in a Box"]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=File:List_server.pdf&diff=17811File:List server.pdf2019-09-11T13:32:24Z<p>Nagreen: </p>
<hr />
<div></div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Graduate_Logic_Seminar&diff=17682Graduate Logic Seminar2019-08-26T19:40:13Z<p>Nagreen: </p>
<hr />
<div>The Graduate Logic Seminar is an informal space where graduate student and professors present topics related to logic which are not necessarly original or completed work. This is an space focus principally in practicing presentation skills or learning materials that are not usually presented on a class.<br />
<br />
* '''When:''' TBD<br />
* '''Where:''' TBD.<br />
* '''Organizers:''' [https://www.math.wisc.edu/~omer/ Omer Mermelstein]<br />
<br />
The talk schedule is arranged at the beginning of each semester. If you would like to participate, please contact one of the organizers.<br />
<br />
Sign up for the graduate logic seminar mailing list: join-grad-logic-sem@lists.wisc.edu<br />
<br />
<br />
<br />
== Fall 2019 ==<br />
<br />
TBD<br />
<br />
==Previous Years==<br />
<br />
The schedule of talks from past semesters can be found [[Graduate Logic Seminar, previous semesters|here]].</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Colloquia&diff=17611Colloquia2019-08-05T13:50:07Z<p>Nagreen: /* Fall 2019 */</p>
<hr />
<div>= Mathematics Colloquium =<br />
<br />
All colloquia are on Fridays at 4:00 pm in Van Vleck B239, '''unless otherwise indicated'''.<br />
<br />
<br />
<br />
==Fall 2019==<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 6<br />
| <br />
|<br />
| <br />
|-<br />
|Sept 13<br />
| [https://www.math.ksu.edu/~soibel/ Yan Soibelman] (Kansas State)<br />
|[[#Yan Soibelman (Kansas State)| Riemann-Hilbert correspondence and Fukaya categories ]]<br />
| Caldararu<br />
|<br />
|-<br />
|Sept 16 '''Monday Room 911'''<br />
| Alicia Dickenstein (Buenos Aires)<br />
|[[# TBA| TBA ]]<br />
| Craciun<br />
|<br />
|-<br />
|Sept 20<br />
| Jianfeng Lu (Duke)<br />
|[[#TBA | TBA]]<br />
| Qin<br />
|<br />
|-<br />
|Sept 27<br />
|Elchnanan Mossel (MIT) Distinguished Lecture<br />
|-<br />
|Oct 4<br />
|<br />
|<br />
|-<br />
|Oct 11<br />
|<br />
|-<br />
|Oct 18<br />
|<br />
|<br />
|<br />
|-<br />
|Oct 25<br />
|<br />
|-<br />
|Nov 1<br />
|Possibly reserved for job talk?<br />
|<br />
|-<br />
|Nov 8<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Nov 15<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Nov 22<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Nov 29<br />
|Thanksgiving<br />
|<br />
|-<br />
|Dec 6<br />
|Reserved for job talk<br />
|<br />
|-<br />
|Dec 13<br />
|Reserved for job talk<br />
|<br />
|}<br />
<br />
==Spring 2020==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|<br />
|-<br />
|Jan 24<br />
|<br />
|-<br />
|Jan 31<br />
|<br />
|-<br />
|Feb 7<br />
|<br />
|-<br />
|Feb 14<br />
|<br />
|-<br />
|Feb 21<br />
|<br />
|-<br />
|Feb 28<br />
|<br />
|-<br />
|March 6<br />
|<br />
|-<br />
|March 13<br />
|<br />
|-<br />
|March 20<br />
|Spring break<br />
|<br />
|-<br />
|March 27<br />
|(Moduli Spaces Conference)<br />
|<br />
|Boggess, Sankar<br />
|-<br />
|April 3<br />
|<br />
|-<br />
|April 10<br />
| Sarah Koch (Michigan)<br />
|<br />
| Bruce (WIMAW)<br />
|-<br />
|April 17<br />
|Caroline Turnage-Butterbaugh (Carleton College)<br />
|<br />
|Marshall<br />
|-<br />
|April 24<br />
|<br />
|-<br />
|May 1<br />
|Robert Lazarsfeld (Stony Brook)<br />
|Distinguished lecture<br />
|Erman<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
===Yan Soibelman (Kansas State)===<br />
<br />
Title: Riemann-Hilbert correspondence and Fukaya categories<br />
<br />
Abstract: In this talk I am going to discuss the role of Fukaya categories in the Riemann-Hilbert correspondence<br />
for differential, q-difference and elliptic difference equations in dimension one.<br />
This approach not only gives a unified answer for several versions of the Riemann-Hilbert correspondence but also leads to a natural formulation<br />
of the non-abelian Hodge theory in dimension one. It also explains why periodic monopoles<br />
should appear as harmonic objects in this generalized non-abelian Hodge theory.<br />
All that is a part of the bigger project ``Holomorphic Floer theory",<br />
joint with Maxim Kontsevich.<br />
<br />
== Past Colloquia ==<br />
<br />
[[Colloquia/Blank|Blank]]<br />
<br />
[[Colloquia/Spring2019|Spring 2019]]<br />
<br />
[[Colloquia/Fall2018|Fall 2018]]<br />
<br />
[[Colloquia/Spring2018|Spring 2018]]<br />
<br />
[[Colloquia/Fall2017|Fall 2017]]<br />
<br />
[[Colloquia/Spring2017|Spring 2017]]<br />
<br />
[[Archived Fall 2016 Colloquia|Fall 2016]]<br />
<br />
[[Colloquia/Spring2016|Spring 2016]]<br />
<br />
[[Colloquia/Fall2015|Fall 2015]]<br />
<br />
[[Colloquia/Spring2014|Spring 2015]]<br />
<br />
[[Colloquia/Fall2014|Fall 2014]]<br />
<br />
[[Colloquia/Spring2014|Spring 2014]]<br />
<br />
[[Colloquia/Fall2013|Fall 2013]]<br />
<br />
[[Colloquia 2012-2013|Spring 2013]]<br />
<br />
[[Colloquia 2012-2013#Fall 2012|Fall 2012]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17488Analysis Seminar2019-06-03T20:45:04Z<p>Nagreen: </p>
<hr />
<div>'''Fall 2019 and Spring 2020 Analysis Seminar Series<br />
'''<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17487Analysis Seminar2019-06-03T20:44:54Z<p>Nagreen: </p>
<hr />
<div>'''Fall 2019 and Spring 2020 Analysis Seminar Series<br />
'''<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17486Analysis Seminar2019-06-03T20:44:08Z<p>Nagreen: </p>
<hr />
<div><br />
<br />
<br />
== This is the schedule for the Fall 2019 and Spring 2020 Analysis Seminar Series.==<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17485Analysis Seminar2019-06-03T20:44:00Z<p>Nagreen: </p>
<hr />
<div><br />
<br />
<br />
== This is the schedule for the Fall 2019 and Spring 2020 Analysis Seminar Series.<br />
==<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17484Analysis Seminar2019-06-03T20:43:39Z<p>Nagreen: </p>
<hr />
<div>'''Analysis Seminar'''<br />
<br />
This is the schedule for the Fall 2019 and Spring 2020 Analysis Seminar Series.<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Analysis_Seminar&diff=17483Analysis Seminar2019-06-03T20:43:03Z<p>Nagreen: </p>
<hr />
<div>'''Analysis Seminar<br />
'''<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
| Person<br />
| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
|Date<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
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| Institution<br />
|[[#linktoabstract | Title ]]<br />
| Sponsor<br />
|-<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
<br />
===Name===<br />
<br />
Title<br />
<br />
Abstract<br />
<br />
=Extras=<br />
[[Blank Analysis Seminar Template]]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Fall_2018_and_Spring_2019_Analysis_Seminars&diff=17482Fall 2018 and Spring 2019 Analysis Seminars2019-06-03T20:42:04Z<p>Nagreen: Created page with "'''Analysis Seminar ''' The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated. If you wish to invite a speaker please contact Brian at street(a..."</p>
<hr />
<div>'''Analysis Seminar<br />
'''<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 11<br />
| Simon Marshall<br />
| UW Madison<br />
|[[#Simon Marshall | Integrals of eigenfunctions on hyperbolic manifolds ]]<br />
| <br />
|-<br />
|'''Wednesday, Sept 12'''<br />
| Gunther Uhlmann <br />
| University of Washington<br />
| Distinguished Lecture Series<br />
| See colloquium website for location<br />
|-<br />
|'''Friday, Sept 14'''<br />
| Gunther Uhlmann <br />
| University of Washington<br />
| Distinguished Lecture Series<br />
| See colloquium website for location<br />
|-<br />
|Sept 18<br />
| Grad Student Seminar<br />
| <br />
|<br />
|<br />
|-<br />
|Sept 25<br />
| Grad Student Seminar<br />
|<br />
|<br />
|<br />
|-<br />
|Oct 9<br />
| Hong Wang<br />
| MIT<br />
|[[#Hong Wang | About Falconer distance problem in the plane ]]<br />
| Ruixiang <br />
|-<br />
|Oct 16<br />
| Polona Durcik<br />
| Caltech<br />
|[[#Polona Durcik | Singular Brascamp-Lieb inequalities and extended boxes in R^n ]]<br />
| Joris <br />
|-<br />
|Oct 23<br />
| Song-Ying Li<br />
| UC Irvine<br />
|[[#Song-Ying Li | Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold ]]<br />
| Xianghong <br />
|-<br />
|Oct 30<br />
|Grad student seminar<br />
|<br />
|<br />
|<br />
|-<br />
|Nov 6<br />
| Hanlong Fang<br />
| UW Madison<br />
|[[#Hanlong Fang | A generalization of the theorem of Weil and Kodaira on prescribing residues ]]<br />
| Brian<br />
|-<br />
||'''Monday, Nov. 12, B139'''<br />
| Kyle Hambrook<br />
| San Jose State University<br />
|[[#Kyle Hambrook | Fourier Decay and Fourier Restriction for Fractal Measures on Curves ]]<br />
| Andreas<br />
|-<br />
|Nov 13<br />
| Laurent Stolovitch<br />
| Université de Nice - Sophia Antipolis<br />
|[[#Laurent Stolovitch | Equivalence of Cauchy-Riemann manifolds and multisummability theory ]]<br />
|Xianghong<br />
|-<br />
|Nov 20<br />
| Grad Student Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Nov 27<br />
| No Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Dec 4<br />
| No Seminar<br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Jan 22<br />
| Brian Cook<br />
| Kent<br />
|[[#Brian Cook | Equidistribution results for integral points on affine homogenous algebraic varieties ]]<br />
| Street<br />
|-<br />
|Jan 29<br />
| No Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
|<br />
|-<br />
|Feb 5, '''B239'''<br />
| Alexei Poltoratski<br />
| Texas A&M<br />
|[[#Alexei Poltoratski | Completeness of exponentials: Beurling-Malliavin and type problems ]]<br />
| Denisov<br />
|-<br />
|'''Friday, Feb 8'''<br />
| Aaron Naber<br />
| Northwestern University<br />
|[[#linktoabstract | A structure theory for spaces with lower Ricci curvature bounds ]]<br />
| See colloquium website for location<br />
|-<br />
|Feb 12<br />
| Shaoming Guo<br />
| UW Madison<br />
|[[#Shaoming Guo | Polynomial Roth theorems in Salem sets ]]<br />
| <br />
|-<br />
|'''Wed, Feb 13, B239'''<br />
| Dean Baskin<br />
| TAMU<br />
|[[# Dean Baskin | Radiation fields for wave equations ]]<br />
| Colloquium<br />
|-<br />
|'''Friday, Feb 15'''<br />
| Lillian Pierce<br />
| Duke<br />
|[[#Lillian Pierce | Short character sums ]]<br />
| Colloquium<br />
|-<br />
|'''Monday, Feb 18, 3:30 p.m, B239.'''<br />
| Daniel Tataru<br />
| UC Berkeley<br />
|[[#Daniel Tataru | A Morawetz inequality for water waves ]]<br />
| PDE Seminar<br />
|-<br />
|Feb 19<br />
| Wenjia Jing <br />
|Tsinghua University<br />
|Periodic homogenization of Dirichlet problems in perforated domains: a unified proof<br />
| PDE Seminar<br />
|-<br />
|Feb 26<br />
| No Seminar<br />
|<br />
|<br />
|-<br />
|Mar 5<br />
| Loredana Lanzani<br />
| Syracuse University<br />
|[[#Loredana Lanzani | On regularity and irregularity of the Cauchy-Szegő projection in several complex variables ]]<br />
| Xianghong<br />
|-<br />
|Mar 12<br />
| Trevor Leslie<br />
| UW Madison<br />
|[[#Trevor Leslie | Energy Equality for the Navier-Stokes Equations at the First Possible Blowup Time ]]<br />
|<br />
|-<br />
|Mar 19<br />
|Spring Break!<br />
| <br />
|<br />
|<br />
|-<br />
|Mar 26<br />
| No seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Apr 2<br />
| Stefan Steinerberger<br />
| Yale<br />
|[[#Stefan Steinerberger | Wasserstein Distance as a Tool in Analysis ]]<br />
| Shaoming, Andreas<br />
|-<br />
<br />
|Apr 9<br />
| Franc Forstnerič <br />
| Unversity of Ljubljana<br />
|[[#Franc Forstnerič | Minimal surfaces by way of complex analysis ]]<br />
| Xianghong, Andreas<br />
|-<br />
|Apr 16<br />
| Andrew Zimmer<br />
| Louisiana State University<br />
|[[#Andrew Zimmer | The geometry of domains with negatively pinched Kaehler metrics ]]<br />
| Xianghong<br />
|-<br />
|Apr 23<br />
| Brian Street<br />
| University of Wisconsin-Madison<br />
|[[#Brian Street | Maximal Hypoellipticity ]]<br />
| Street<br />
|-<br />
|Apr 30<br />
| Zhen Zeng<br />
| UPenn<br />
|[[#Zhen Zeng | Decay property of multilinear oscillatory integrals ]]<br />
| Shaoming<br />
|-<br />
|*[https://www.math.wisc.edu/seeger2019/?q=node/2 Madison Lectures in Fourier Analysis]<br />
|-<br />
|Summer<br />
|-<br />
|Sept 10<br />
|Jose Madrid<br />
|UCLA<br />
|<br />
|Andreas, David<br />
|-<br />
|Oct 15<br />
|Bassam Shayya<br />
|American University of Beirut<br />
|<br />
|Andreas, Betsy<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Simon Marshall===<br />
<br />
''Integrals of eigenfunctions on hyperbolic manifolds''<br />
<br />
Let X be a compact hyperbolic manifold, and let Y be a totally geodesic closed submanifold in X. I will discuss the problem of bounding the integral of a Laplace eigenfunction on X over Y, as the eigenvalue tends to infinity. I will present an upper bound for these integrals that is sharp on average, and briefly describe ongoing work with Farrell Brumley in which we attempt to produce eigenfunctions with very large periods.<br />
<br />
<br />
===Hong Wang===<br />
<br />
''About Falconer distance problem in the plane''<br />
<br />
If E is a compact set of Hausdorff dimension greater than 5/4 on the plane, we prove that there is a point x\in E such that the set of distances between x and E has positive Lebesgue measure. Our result improves upon Wolff's theorem for dim E> 4/3. This is joint work with Larry Guth, Alex Iosevich and Yumeng Ou. <br />
<br />
===Polona Durcik===<br />
<br />
''Singular Brascamp-Lieb inequalities and extended boxes in R^n''<br />
<br />
Brascamp-Lieb inequalities are L^p estimates for certain multilinear forms on functions on Euclidean spaces. In this talk we consider singular Brascamp-Lieb inequalities, which arise when one of the functions is replaced by a Calderon-Zygmund kernel. We focus on a family of multilinear forms in R^n with a certain cubical structure and discuss their connection to some patterns in positive density subsets in R^n. Based on joint works with V. Kovac and C. Thiele.<br />
<br />
<br />
===Song-Ying Li===<br />
<br />
''Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold''<br />
<br />
In this talk, I will present my recent works with my collaborators on the lower bound and upper bounds estimates<br />
for the first positive eigenvalues of Kohn Laplacian and sub-Laplacian on a strictly pseudoconvex pseudo-Hermitian CR manifold,<br />
which include CR Lichnerowicz-Obata theorem for the lower and upper bounds for the first positive eigenvalue for the<br />
Kohn Laplacian on strictly pseudoconvex hypersurfaces.<br />
<br />
<br />
===Hanlong Fan===<br />
<br />
''A generalization of the theorem of Weil and Kodaira on prescribing residues''<br />
<br />
An old theorem of Weil and Kodaira says that: For a K\"ahler manifold X, there exists a closed meromorphic one-form with residue divisor D if and only if D is homologous to zero. In this talk, I will generalize Weil and Kodaira's criterion to non-K\"ahler manifolds.<br />
<br />
===Kyle Hambrook===<br />
<br />
''Fourier Decay and Fourier Restriction for Fractal Measures on Curves''<br />
<br />
I will discuss my recent work on some problems concerning<br />
Fourier decay and Fourier restriction for fractal measures on curves.<br />
<br />
===Laurent Stolovitch===<br />
<br />
''Equivalence of Cauchy-Riemann manifolds and multisummability theory''<br />
<br />
We apply the multisummability theory from Dynamical Systems to CR-geometry. As the main result, we show that two real-analytic hypersurfaces in $\mathbb C^2$ are formally equivalent, if and only if they are $C^\infty$ CR-equivalent at the respective point. As a corollary, we prove that all formal equivalences between real-algebraic Levi-nonflat hypersurfaces in $\mathbb C^2$ are algebraic (and in particular convergent). This is a joint work with I. Kossovskiy and B. Lamel.<br />
<br />
<br />
===Brian Cook===<br />
<br />
''Equidistribution results for integral points on affine homogenous algebraic varieties''<br />
<br />
Let Q be a homogenous integral polynomial of degree at least two. We consider certain results and questions concerning the distribution of the integral points on the level sets of Q.<br />
<br />
===Alexei Poltoratski===<br />
<br />
''Completeness of exponentials: Beurling-Malliavin and type problems''<br />
<br />
This talk is devoted to two old problems of harmonic analysis mentioned in the title. Both problems ask when a family of complex exponentials is complete (spans) an L^2-space. The Beruling-Malliavin problem was solved in the early 1960s and I will present its classical solution along with modern generalizations and applications. I will then discuss history and recent progress in the type problem, which stood open for more than 70 years.<br />
<br />
<br />
===Shaoming Guo===<br />
<br />
''Polynomial Roth theorems in Salem sets''<br />
<br />
Let P(t) be a polynomial of one real variable. I will report a result on searching for patterns of the form (x, x+t, x+P(t)) within Salem sets, whose Hausdorff dimension is sufficiently close to one. Joint work with Fraser and Pramanik. <br />
<br />
<br />
<br />
<br />
===Dean Baskin===<br />
<br />
''Radiation fields for wave equations''<br />
<br />
Radiation fields are rescaled limits of solutions of wave equations near "null infinity" and capture the radiation pattern seen by a distant observer. They are intimately connected with the Fourier and Radon transforms and with scattering theory. In this talk, I will define and discuss radiation fields in a few contexts, with an emphasis on spacetimes that look flat near infinity. The main result is a connection between the asymptotic behavior of the radiation field and a family of quantum objects on an associated asymptotically hyperbolic space.<br />
<br />
===Lillian Pierce===<br />
<br />
''Short character sums''<br />
<br />
A surprisingly diverse array of problems in analytic number theory have at their heart a problem of bounding (from above) an exponential sum, or its multiplicative cousin, a so-called character sum. For example, both understanding the Riemann zeta function or Dirichlet L-functions inside the critical strip, and also counting solutions to Diophantine equations via the circle method or power sieve methods, involve bounding such sums. In general, the sums of interest fall into one of two main regimes: complete sums or incomplete sums, with this latter regime including in particular “short sums.” Short sums are particularly useful, and particularly resistant to almost all known methods. In this talk, we will see what makes a sum “short,” sketch why it would be incredibly powerful to understand short sums, and discuss a curious proof from the 1950’s which is still the best way we know to bound short sums. We will end by describing new work which extends the ideas of this curious proof to bound short sums in much more general situations.<br />
<br />
===Loredana Lanzani===<br />
<br />
''On regularity and irregularity of the Cauchy-Szegő projection in several complex variables''<br />
<br />
This talk is a survey of my latest, and now final, collaboration with Eli Stein.<br />
<br />
It is known that for bounded domains $D$ in $\mathbb C^n$ that are of class $C^2$ and are strongly pseudo-convex, the Cauchy-Szegő projection is bounded in $L^p(\text{b}D, d\Sigma)$ for $1<p<\infty$. (Here $d\Sigma$ is induced Lebesgue measure.) We show, using appropriate worm domains, that this fails for any $p\neq 2$, when we assume that the domain in question is only weakly pseudo-convex. Our starting point are the ideas of Kiselman-Barrett introduced more than 30 years ago in the analysis of the Bergman projection. However the study of the Cauchy-Szegő projection raises a number of new issues and obstacles that need to be overcome. We will also compare these results to the analogous problem for the Cauchy-Leray integral, where however the relevant counter-example is of much simpler nature.<br />
<br />
===Trevor Leslie===<br />
<br />
''Energy Equality for the Navier-Stokes Equations at the First Possible Blowup Time''<br />
<br />
In this talk, we discuss the problem of energy equality for strong solutions of the Navier-Stokes Equations (NSE) at the first time where such solutions may lose regularity. Our approach is motivated by a famous theorem of Caffarelli, Kohn, and Nirenberg, which states that the set of singular points associated to a suitable weak solution of the NSE has parabolic Hausdorff dimension of at most 1. In particular, we furnish sufficient conditions for energy equality which depend on the dimension of the singularity set in addition to time and space integrability assumptions; in doing so we improve upon the classical results when attention is restricted to the first blowup time. When our method is inconclusive, we are able to quantify the possible failure of energy equality in terms of the lower local dimension and the ''concentration dimension'' of a certain measure associated to the solution. The work described is joint with Roman Shvydkoy (UIC).<br />
<br />
===Stefan Steinerberger===<br />
<br />
''Wasserstein Distance as a Tool in Analysis''<br />
<br />
Wasserstein Distance is a way of measuring the distance between two probability distributions (minimizing it is a main problem in Optimal Transport). We will give a gentle Introduction into what it means and then use it to prove (1) a completely elementary but possibly new and quite curious inequality for real-valued functions and (2) a statement along the following lines: linear combinations of eigenfunctions of elliptic operators corresponding to high frequencies oscillate a lot and vanish on a large set of co-dimension 1 (this is already interesting for trigonometric polynomials on the 2-torus, sums of finitely many sines and cosines, whose sum has to vanish on long lines) and (3) some statements in Basic Analytic Number Theory that drop out for free as a byproduct.<br />
<br />
===Franc Forstnerič===<br />
<br />
''Minimal surfaces by way of complex analysis''<br />
<br />
After a brief historical introduction, I will present some recent developments in the theory of minimal surfaces in Euclidean spaces which have been obtained by complex analytic methods. The emphasis will be on results pertaining to the global theory of minimal surfaces including Runge and Mergelyan approximation, the conformal Calabi-Yau problem, properly immersed and embedded minimal surfaces, and a new result on the Gauss map of minimal surfaces.<br />
<br />
===Andrew Zimmer===<br />
<br />
''The geometry of domains with negatively pinched Kaehler metrics''<br />
<br />
Every bounded pseudoconvex domain in C^n has a natural complete metric: the Kaehler-Einstein metric constructed by Cheng-Yau. When the boundary of the domain is strongly pseudoconvex, Cheng-Yau showed that the holomorphic sectional curvature of this metric is asymptotically a negative constant. In this talk I will describe some partial converses to this result, including the following: if a smoothly bounded convex domain has a complete Kaehler metric with close to constant negative holomorphic sectional curvature near the boundary, then the domain is strongly pseudoconvex. This is joint work with F. Bracci and H. Gaussier.<br />
<br />
<br />
===Brian Street===<br />
<br />
''Maximal Hypoellipticity''<br />
<br />
In 1974, Folland and Stein introduced a generalization of ellipticity known as maximal hypoellipticity. This talk will be an introduction to this concept and some of the ways it generalizes ellipticity.<br />
<br />
<br />
===Zhen Zeng===<br />
<br />
''Decay property of multilinear oscillatory integrals''<br />
<br />
In this talk, I will be talking about the conditions of the phase function $P$ and the linear mappings $\{\pi_i\}_{i=1}^n$ to ensure the asymptotic power decay properties of the following trilinear oscillatory integrals <br />
\[<br />
I_{\lambda}(f_1,f_2,f_3)=\int_{\mathbb{R}^m}e^{i\lambda P(x)}\prod_{j=1}^3 f_j(\pi_j(x))\eta(x)dx, <br />
\]<br />
which falls into the broad goal in the previous work of Christ, Li, Tao and Thiele.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Previous_Analysis_seminars&diff=17481Previous Analysis seminars2019-06-03T20:41:59Z<p>Nagreen: </p>
<hr />
<div>[https://www.math.wisc.edu/wiki/index.php/Analysis_Seminar Current schedule]<br />
<br />
Past Analysis seminars:<br />
<br />
*[[Fall 2018 and Spring 2019 Analysis Seminars]]<br />
*[[Fall 2017 and Spring 2018 Analysis Seminars]]<br />
*[[Spring 2017 Analysis Seminars]]<br />
*[http://www.math.wisc.edu/~seeger/fall16.html Fall 2016]<br />
*[http://www.math.wisc.edu/~seeger/spring16.html Spring 2016]<br />
*[http://www.math.wisc.edu/~seeger/fall15.html Fall 2015]<br />
*[http://www.math.wisc.edu/~seeger/spring15.html Spring 2015]<br />
*[http://www.math.wisc.edu/~seeger/fall14.html Fall 2014]<br />
*[http://www.math.wisc.edu/~seeger/spring14.html Spring 2014]<br />
*[http://www.math.wisc.edu/~seeger/fall13.html Fall 2013]<br />
*[http://www.math.wisc.edu/~seeger/spring13.html Spring 2013]<br />
*[http://www.math.wisc.edu/~seeger/fall12.html Fall 2012]<br />
*[http://www.math.wisc.edu/~seeger/spring12.html Spring 2012]<br />
*[http://www.math.wisc.edu/~seeger/fall11.html Fall 2011]<br />
*[http://www.math.wisc.edu/~seeger/spring11.html Spring 2011]<br />
*[http://www.math.wisc.edu/~seeger/fall10.html Fall 2010]<br />
*[http://www.math.wisc.edu/~seeger/spring10.html Spring 2010]<br />
*[http://www.math.wisc.edu/~seeger/fall09.html Fall 2009]<br />
*[http://www.math.wisc.edu/~seeger/spring09.html Spring 2009]<br />
*[http://www.math.wisc.edu/~seeger/fall08.html Fall 2008]<br />
*[http://www.math.wisc.edu/~seeger/spring08.html Spring 2008]<br />
*[http://www.math.wisc.edu/~seeger/fall07.html Fall 2007]<br />
*[http://www.math.wisc.edu/~seeger/spring07.html Spring 2007]<br />
*[http://www.math.wisc.edu/~seeger/fall06.html Fall 2006]<br />
*[http://www.math.wisc.edu/~seeger/spring06.html Spring 2006]<br />
*[http://www.math.wisc.edu/~seeger/fall05.html Fall 2005]<br />
*[http://www.math.wisc.edu/~seeger/spring05.html Spring 2005]<br />
*[http://www.math.wisc.edu/~seeger/fall04.html Fall 2004]<br />
*[http://www.math.wisc.edu/~seeger/summer04.html Summer 2004]<br />
*[http://www.math.wisc.edu/~seeger/spring04.html Spring 2004]<br />
*[http://www.math.wisc.edu/~seeger/fall03.html Fall 2003]<br />
*[http://www.math.wisc.edu/~seeger/spring03.html Spring 2003]<br />
*[http://www.math.wisc.edu/~seeger/fall02.html Fall 2002]<br />
*[http://www.math.wisc.edu/~seeger/spring02.html Spring 2002]<br />
*[http://www.math.wisc.edu/~seeger/fall01.html Fall 2001]<br />
*[http://www.math.wisc.edu/~seeger/spring01.html Spring 2001]<br />
*[http://www.math.wisc.edu/~seeger/fall00.html Fall 2000]<br />
*[http://www.math.wisc.edu/~seeger/spring00.html Spring 2000]<br />
*[http://www.math.wisc.edu/~seeger/fall99.html Fall 1999]<br />
*[http://www.math.wisc.edu/~seeger/spring99.html Spring 1999]<br />
*[http://www.math.wisc.edu/~seeger/fall98 Fall 1998]<br />
*[http://www.math.wisc.edu/~seeger/spring98.html Spring 1998]<br />
*[http://www.math.wisc.edu/~seeger/fall97.html Fall 1997]<br />
*[http://www.math.wisc.edu/~seeger/spring97.html Spring 1997]<br />
*[http://www.math.wisc.edu/~seeger/fall96.html Fall 1996]<br />
*[http://www.math.wisc.edu/~seeger/spring96.html Spring 1996]<br />
*[http://www.math.wisc.edu/~seeger/fall95.html Fall 1995]</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Fall_2017_and_Spring_2018_Analysis_Seminars&diff=17480Fall 2017 and Spring 2018 Analysis Seminars2019-06-03T20:41:09Z<p>Nagreen: Undo revision 17479 by Nagreen (talk)</p>
<hr />
<div>= 2017-2018 Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|September 8 in B239 (Colloquium)<br />
| Tess Anderson<br />
| UW Madison<br />
|[[#linktoabstract | A Spherical Maximal Function along the Primes]]<br />
|Tonghai<br />
|-<br />
|September 19<br />
| Brian Street<br />
| UW Madison<br />
|[[#Brian Street | Convenient Coordinates ]]<br />
| Betsy<br />
|-<br />
|September 26<br />
| Hiroyoshi Mitake<br />
| Hiroshima University<br />
|[[#Hiroyoshi Mitake | Derivation of multi-layered interface system and its application ]]<br />
| Hung<br />
|-<br />
|October 3<br />
| Joris Roos<br />
| UW Madison<br />
|[[#Joris Roos | A polynomial Roth theorem on the real line ]]<br />
| Betsy<br />
|-<br />
|October 10<br />
| Michael Greenblatt<br />
| UI Chicago<br />
|[[#Michael Greenblatt | Maximal averages and Radon transforms for two-dimensional hypersurfaces ]]<br />
| Andreas<br />
|-<br />
|October 17<br />
| David Beltran<br />
| Basque Center of Applied Mathematics<br />
|[[#David Beltran | Fefferman-Stein inequalities ]]<br />
| Andreas<br />
|-<br />
|Wednesday, October 18, 4:00 p.m. in B131<br />
|Jonathan Hickman<br />
|University of Chicago<br />
|[[#Jonathan Hickman | Factorising X^n ]]<br />
|Andreas<br />
|-<br />
|October 24<br />
| Xiaochun Li<br />
| UIUC<br />
|[[#Xiaochun Li | Recent progress on the pointwise convergence problems of Schroedinger equations ]]<br />
| Betsy<br />
|-<br />
|Thursday, October 26, 4:30 p.m. in B139<br />
| Fedor Nazarov<br />
| Kent State University<br />
|[[#Fedor Nazarov | The Lerner-Ombrosi-Perez bound in the Muckenhoupt Wheeden conjecture is sharp ]]<br />
| Sergey, Andreas<br />
|-<br />
|Friday, October 27, 4:00 p.m. in B239<br />
| Stefanie Petermichl<br />
| University of Toulouse<br />
|[[#Stefanie Petermichl | Higher order Journé commutators ]]<br />
| Betsy, Andreas<br />
|-<br />
|Wednesday, November 1, 4:00 p.m. in B239 (Colloquium)<br />
| Shaoming Guo<br />
| Indiana University<br />
|[[#Shaoming Guo | Parsell-Vinogradov systems in higher dimensions ]]<br />
| Andreas<br />
|-<br />
|November 14<br />
| Naser Talebizadeh Sardari<br />
| UW Madison<br />
|[[#Naser Talebizadeh Sardari | Quadratic forms and the semiclassical eigenfunction hypothesis ]]<br />
| Betsy<br />
|-<br />
|November 28<br />
| Xianghong Chen<br />
| UW Milwaukee<br />
|[[#Xianghong Chen | Some transfer operators on the circle with trigonometric weights ]]<br />
| Betsy<br />
|-<br />
|Monday, December 4, 4:00, B139<br />
| Bartosz Langowski and Tomasz Szarek<br />
| Institute of Mathematics, Polish Academy of Sciences<br />
|[[#Bartosz Langowski and Tomasz Szarek | Discrete Harmonic Analysis in the Non-Commutative Setting ]]<br />
| Betsy<br />
|-<br />
|Wednesday, December 13, 4:00, B239 (Colloquium)<br />
|Bobby Wilson <br />
|MIT<br />
|[[#Bobby Wilson | Projections in Banach Spaces and Harmonic Analysis ]]<br />
| Andreas<br />
|-<br />
| Monday, February 5, 3:00-3:50, B341 (PDE-GA seminar)<br />
| Andreas Seeger<br />
| UW<br />
|[[#Andreas Seeger | Singular integrals and a problem on mixing flows]] <br />
|<br />
|-<br />
|February 6<br />
| Dong Dong<br />
| UIUC<br />
| [[#Dong Dong | Hibert transforms in a 3 by 3 matrix and applications in number theory]]<br />
|Betsy<br />
|-<br />
|February 13<br />
| Sergey Denisov<br />
| UW Madison<br />
| [[#Sergey Denisov | Spectral Szegő theorem on the real line]]<br />
| <br />
|-<br />
|February 20<br />
| Ruixiang Zhang <br />
| IAS (Princeton)<br />
| [[#Ruixiang Zhang | The (Euclidean) Fractal Uncertainty Principle]]<br />
| Betsy, Jordan, Andreas<br />
|-<br />
|February 27<br />
|Detlef Müller <br />
|University of Kiel<br />
| [[#Detlef Müller | On Fourier restriction for a non-quadratic hyperbolic surface]]<br />
|Betsy, Andreas<br />
|-<br />
|Wednesday, March 7, 4:00 p.m.<br />
| Winfried Sickel <br />
|Friedrich-Schiller-Universität Jena<br />
| [[#Winfried Sickel | On the regularity of compositions of functions]]<br />
|Andreas<br />
|-<br />
|March 20<br />
| Betsy Stovall<br />
| UW<br />
| [[#linkofabstract | Two endpoint bounds via inverse problems]]<br />
|<br />
|-<br />
|April 10<br />
| Martina Neuman<br />
| UC Berkeley<br />
| [[#Martina Neuman | Gowers-Host-Kra norms and Gowers structure on Euclidean spaces]]<br />
| Betsy<br />
|-<br />
|Friday, April 13, 4:00 p.m. (Colloquium, 911 VV)<br />
|Jill Pipher<br />
|Brown<br />
| [[#Jill Pipher | Mathematical ideas in cryptography]]<br />
|WIMAW<br />
|-<br />
|April 17<br />
| <br />
| <br />
| [[#linkofabstract | Title]]<br />
|<br />
|-<br />
|April 24<br />
| Lenka Slavíková<br />
| University of Missouri<br />
| [[#Lenka Slavíková | <math>L^2 \times L^2 \to L^1</math> boundedness criteria]]<br />
|Betsy, Andreas<br />
|-<br />
|May 1 '''at 3:30pm'''<br />
| Xianghong Gong<br />
| UW<br />
| [[#Xianghong Gong | Smooth equivalence of deformations of domains in complex euclidean spaces]]<br />
|<br />
|-<br />
| '''May 2 in B239 at 4pm'''<br />
| Keith Rush<br />
| senior data scientist with the Milwaukee Brewers<br />
| [[#Keith Rush | Guerilla warfare: ruling the data jungle]]<br />
|-<br />
| '''May 7''' in '''B223'''<br />
| Ebru Toprak<br />
| UIUC<br />
| [[#Ebru Toprak |Dispersive estimates for massive Dirac equations]]<br />
|Betsy<br />
|-<br />
| '''May 15'''<br />
| Gennady Uraltsev<br />
| Cornell<br />
| [[#linkofabstract | TBA]]<br />
| Andreas, Betsy<br />
|-<br />
| May 16-18, [http://www.math.wisc.edu/~stovall/FA2018/ Workshop in Fourier Analysis]<br />
|<br />
|<br />
|<br />
|Betsy, Andreas<br />
|-<br />
|}<br />
<br />
=Abstracts=<br />
===Brian Street===<br />
<br />
Title: Convenient Coordinates<br />
<br />
Abstract: We discuss the method of picking a convenient coordinate system adapted to vector fields. Let X_1,...,X_q be either real or complex C^1 vector fields. We discuss the question of when there is a coordinate system in which the vector fields are smoother (e.g., C^m, or C^\infty, or real analytic). By answering this in a quantitative way, we obtain coordinate charts which can be used as generalized scaling maps. When the vector fields are real this is joint work with Stovall, and continues in the line of quantitative sub-Riemannian geometry initiated by Nagel, Stein, and Wainger. When the vector fields are complex one obtains a geometry with more structure which can be thought of as "sub-Hermitian".<br />
<br />
===Hiroyoshi Mitake===<br />
<br />
Title: Derivation of multi-layered interface system and its application<br />
<br />
Abstract: In this talk, I will propose a multi-layered interface system which can <br />
be formally derived by the singular limit of the weakly coupled system of <br />
the Allen-Cahn equation. By using the level set approach, this system can be <br />
written as a quasi-monotone degenerate parabolic system. <br />
We give results of the well-posedness of viscosity solutions, and study the <br />
singularity of each layers. This is a joint work with H. Ninomiya, K. Todoroki.<br />
<br />
===Joris Roos===<br />
<br />
Title: A polynomial Roth theorem on the real line<br />
<br />
Abstract: For a polynomial P of degree greater than one, we show the existence of patterns of the form (x,x+t,x+P(t)) with a gap estimate on t in positive density subsets of the reals. This is an extension of an earlier result of Bourgain. Our proof is a combination of Bourgain’s approach and more recent methods that were originally developed for the study of the bilinear Hilbert transform along curves. This talk is based on a joint work with Polona Durcik and Shaoming Guo.<br />
<br />
===Michael Greenblatt===<br />
<br />
Title: Maximal averages and Radon transforms for two-dimensional hypersurfaces<br />
<br />
Abstract: A general local result concerning L^p boundedness of maximal averages over 2D hypersurfaces is described, where p > 2. The surfaces are allowed to have either the traditional smooth density function or a singularity growing as |(x,y)|^{-t} for some 0 < t < 2. This result is a generalization of a theorem of Ikromov, Kempe, and Mueller. Similar methods can be used to show sharp L^p to L^p_a Sobolev estimates for associated Radon transform operators when p is in a certain interval containing 2.<br />
<br />
===David Beltran===<br />
<br />
Title: Fefferman Stein Inequalities<br />
<br />
Abstract: Given an operator T, we focus on obtaining two-weighted inequalities in which the weights are related via certain maximal function. These inequalites, which originated in work of Fefferman and Stein, have been established in an optimal way for different classical operators in Harmonic Analysis. In this talk, we survey some classical results and we present some recent Fefferman-Stein inequalities for pseudodifferential operators and for the solution operators to dispersive equations.<br />
<br />
===Jonathan Hickman===<br />
<br />
Title: Factorising X^n.<br />
<br />
Question: how many ways can the polynomial $X^n$ be factorised as a product of linear factors? Answer: it depends on the ring... In this talk I will describe joint work with Jim Wright investigating certain exponential sum estimates over rings of integers modulo N. This theory serves as a discrete analogue of the (euclidean) Fourier restriction problem, a central question in contemporary harmonic analysis. In particular, as part of this study, the question of counting the number of factorisations of polynomials over such rings naturally arises. I will describe how these number-theoretic considerations can themselves be approached via methods from harmonic analysis.<br />
<br />
===Xiaochun Li ===<br />
<br />
Title: Recent progress on the pointwise convergence problems of Schrodinger equations<br />
<br />
Abstract: Recently, Guth, Du and I solved the pointwise convergence problem of Schrodinger equations in two-dimensional case. We proved that the solution to free Schrodinger equation in R^2 converges to its initial data, provided the initial data belongs to H^s for s larger than 1/3. This result is sharp, up to the end point, due to Bourgain's example. The proof relies on the polynomial partitioning method and the decoupling method. In addition, the pointwise convergence problem is closely related to Fourier restriction conjecture.<br />
<br />
===Fedor Nazarov=== <br />
<br />
Title: The Lerner-Ombrosi-Perez bound in the Muckenhoupt-Wheeden<br />
conjecture is sharp.<br />
<br />
Abstract: We show that the upper bound $[w]_{A_1}\log (e+[w]_{A_1})$ for<br />
the norm of the Hilbert transform on the line as an operator from $L^1(w)$<br />
to $L^{1,\infty}(w)$ cannot be improved in general. This is a joint work<br />
with Andrei Lerner and Sheldy Ombrosi.<br />
<br />
===Stefanie Petermichl===<br />
Title: Higher order Journé commutators<br />
<br />
Abstract: We consider questions that stem from operator theory via Hankel and<br />
Toeplitz forms and target (weak) factorisation of Hardy spaces. In<br />
more basic terms, let us consider a function on the unit circle in its<br />
Fourier representation. Let P_+ denote the projection onto<br />
non-negative and P_- onto negative frequencies. Let b denote<br />
multiplication by the symbol function b. It is a classical theorem by<br />
Nehari that the composed operator P_+ b P_- is bounded on L^2 if and<br />
only if b is in an appropriate space of functions of bounded mean<br />
oscillation. The necessity makes use of a classical factorisation<br />
theorem of complex function theory on the disk. This type of question<br />
can be reformulated in terms of commutators [b,H]=bH-Hb with the<br />
Hilbert transform H=P_+ - P_- . Whenever factorisation is absent, such<br />
as in the real variable setting, in the multi-parameter setting or<br />
other, these classifications can be very difficult.<br />
<br />
Such lines were begun by Coifman, Rochberg, Weiss (real variables) and<br />
by Cotlar, Ferguson, Sadosky (multi-parameter) of characterisation of<br />
spaces of bounded mean oscillation via L^p boundedness of commutators.<br />
We present here an endpoint to this theory, bringing all such<br />
characterisation results under one roof.<br />
<br />
The tools used go deep into modern advances in dyadic harmonic<br />
analysis, while preserving the Ansatz from classical operator theory.<br />
<br />
===Shaoming Guo ===<br />
Title: Parsell-Vinogradov systems in higher dimensions<br />
<br />
Abstract: <br />
I will present a few results on counting the numbers of integer solutions of Parsell-Vinogradov systems in higher dimensions.<br />
Applications to Waring’s problem and to the problem of counting rational linear subspaces lying on certain hyper-surface will be discussed.<br />
Joint works with Jean Bourgain, Ciprian Demeter and Ruixiang Zhang.<br />
<br />
===Naser Talebizadeh Sardari===<br />
<br />
Title: Quadratic forms and the semiclassical eigenfunction hypothesis<br />
<br />
Abstract: Let <math>Q(X)</math> be any integral primitive positive definite quadratic form in <math>k</math> variables, where <math>k\geq4</math>, and discriminant <math>D</math>. For any integer <math>n</math>, we give an upper bound on the number of integral solutions of <math>Q(X)=n</math> in terms of <math>n</math>, <math>k</math>, and <math>D</math>. As a corollary, we prove a conjecture of Lester and Rudnick on the small scale equidistribution of almost all functions belonging to any orthonormal basis of a given eigenspace of the Laplacian on the flat torus <math>\mathbb{T}^d</math> for <math>d\geq 5</math>. This conjecture is motivated by the work of Berry\cite{Berry, Michael} on semiclassical eigenfunction hypothesis.<br />
<br />
===Xianghong Chen===<br />
<br />
Title: Some transfer operators on the circle with trigonometric weights<br />
<br />
Abstract: A transfer operator is an averaging operator over the preimages of a given map. Certain dynamical properties of the map can be studied through its associated transfer operator. In this talk we will introduce a class of weighted transfer operators associated to the Bernoulli maps on the circle (i.e. multiplication by a given integer, mod 1). We will illustrate how the spectral properties of these operators may depend on the specific weight chosen and demonstrate multiple phase transitions. We also present some results on evaluating the spectral radii and corresponding eigenfunctions of these operators, as well as their connections to Fourier analysis. This is joint work with Hans Volkmer. <br />
<br />
===Bobby Wilson===<br />
<br />
Title: Projections in Banach Spaces and Harmonic Analysis<br />
<br />
Abstract: In this talk, we will discuss the measure theoretic principles of orthogonal projections that follow from the classical Besicovitch-Federer projection theorem. The Besicovitch-Federer projection theorem offers a characterization of rectifiability of one-dimensional sets in R^d by the size of their projections to lines. We will focus on the validity of analogues to the Besicovitch-Federer projection theorem with respect to such sets in general Banach spaces. In particular, we will show that the projection theorem is false when the Banach space is infinite-dimensional and discuss related applications to questions in Harmonic Analysis. This is joint work with Marianna Csornyei and David Bate.<br />
<br />
===Andreas Seeger===<br />
<br />
Title: Singular integrals and a problem on mixing flows<br />
<br />
Abstract: The talk will be about results related to Bressan's mixing problem. We present an inequality for the change of a Bianchini semi-norm of characteristic functions under the flow generated by a divergence free time dependent vector field. The approach leads to a bilinear singular integral operator for which one proves bounds on Hardy spaces. This is joint work with Mahir Hadžić, Charles Smart and Brian Street.<br />
<br />
===Dong Dong===<br />
<br />
Title: Hibert transforms in a 3 by 3 matrix and applications in number theory<br />
<br />
Abstract: This talk could interest both analysts and number theorists. I will first present 35 variants of Hilbert transforms, with a focus on their connections with ergodic theory, number theory, and combinatorics. Then I will show how to use Fourier analysis tools to reduce a number theory problem (Roth theorem) to an algebraic geometry problem: this joint work Li and Sawin fully answers a question of Bourgain and Chang about three-term polynomial progressions in subsets of finite fields. I guarantee that a second-year graduate student can understand at least 50% of the talk.<br />
<br />
===Sergey Denisov===<br />
<br />
Title: Spectral Szegő theorem on the real line<br />
<br />
Abstract: For even measures on the real line, we give the criterion for the logarithmic integral to converge in terms of the corresponding De-Branges system (or Krein's string). The applications to probability (linear prediction for stationary Gaussian processes) will be explained. This is the joint result with R. Bessonov.<br />
<br />
===Ruixiang Zhang===<br />
<br />
Title: The (Euclidean) Fractal Uncertainty Principle<br />
<br />
Abstract: On the real line, a version of the uncertainty principle says: If a nonzero function f has its Fourier support lying in B and |A||B| is much smaller than 1, then the L^2 norm of f on A cannot be close to the whole L^2 norm of f. Recently, Bourgain and Dyatlov proved a Fractal Uncertainty Principle (FUP) which has a similar statement. The difference is that in FUP the product of |A| and |B| can be much bigger, but A and B both have to be porous at many scales. We will introduce the theorem and then discuss some unusual features of its proof, most notably the application of the Beurling-Malliavin Theorem. In the original work the dependence on the dimensions of both fractals was ineffective. We will also discuss why we can overcome this ineffectivity (joint work with Long Jin).<br />
<br />
===Detlef Müller===<br />
<br />
Title: On Fourier restriction for a non-quadratic hyperbolic surface<br />
<br />
Abstract: In contrast to what is known about Fourier restriction for elliptic surfaces, rather little is known about hyperbolic surfaces. Hitherto, basically only the quadric $z=xy$ had been studied successfully. In my talk, after giving some background on Fourier restriction, I shall report on recent joint work with S. Buschenhenke and A. Vargas on a cubic perturbation of this quadric. Our analysis reveals that the geometry of the problem changes drastically in the presence of a perturbation term, and that new techniques, compared to the elliptic case, are required to handle more general hyperbolic surfaces.<br />
<br />
===Winfried Sickel===<br />
<br />
Title: On the regularity of compositions of functions<br />
<br />
Abstract: Let <math>E</math> denote a Banach space of locally integrable functions on <math>\mathbb{R}</math>. To each continuous function <math>f:\mathbb{R} \to \mathbb{R}</math><br />
we associate the composition operator<br />
<math>T_f(g):= f\circ g</math>, <math>g\in E</math>. <br />
The properties of <math>T_f</math> strongly depend on the chosen function space <math>E</math>.<br />
In my talk I will concentrate on Sobolev spaces <math>W^m_p</math> and Slobodeckij spaces <math>W^s_p</math>.<br />
The main aim will consist in giving a survey on necessary and sufficient conditions on <math>f</math><br />
such that the composition operator maps such a space <math>E</math> into itself.<br />
<br />
===Martina Neuman===<br />
<br />
Title: Gowers-Host-Kra norms and Gowers structure on Euclidean spaces<br />
<br />
Abstract: The investigation on Brascamp-Lieb data - their structure, their extremizability, their stability and regularity of their constants - has been an active one in Harmonic Analysis. In this talk, I'll present an example of a Brascamp-Lieb structure: a so-called Gowers structure on Euclidean spaces, together with the related Gowers-Host-Kra norms - these were originally tools in additive combinatorics context. I'll dissertate on what happens when a function nearly achieves its Gowers-Host-Kra norm in a Euclidean context - this can be seen as continuation of the work of Eisner-Tao - and a related stability result of the Gowers structure on Euclidean spaces.<br />
<br />
===Jill Pipher===<br />
<br />
Title: Mathematical ideas in cryptography<br />
<br />
Abstract: This talk does not assume prior knowledge of public key crypto (PKC). I'll talk about the history of the subject and some current areas of research,<br />
including homomorphic encryption.<br />
<br />
===Lenka Slavíková===<br />
<br />
Title: <math>L^2 \times L^2 \to L^1</math> boundedness criteria<br />
<br />
Abstract: It is a consequence of Plancherel's identity that a linear multiplier operator associated with a function <math>m</math> is bounded from <math>L^2</math> to itself if and only if <math>m</math> belongs to the space <math>L^\infty</math>. In this talk we will investigate the <math>L^2 \times L^2 \to L^1</math> boundedness of bilinear multiplier operators which is as central in the bilinear theory as the <math>L^2</math> boundedness is in the linear multiplier theory. We will present a sharp <math>L^2 \times L^2 \to L^1</math> boundedness criterion for a class of bilinear operators associated with a multiplier given by a signed sum of dyadic dilations of a given function, in terms of the <math>L^q</math> integrability of this function; precisely we will show that boundedness holds if and only if <math>q<4</math>. We will then discuss applications of this result concerning bilinear rough singular integrals and bilinear dyadic spherical maximal functions. This is a joint work with L. Grafakos and D. He.<br />
<br />
===Xianghong Gong===<br />
<br />
Title: Smooth equivalence of deformations of domains in complex euclidean spaces<br />
<br />
Abstract: We prove that two smooth families of 2-connected domains in the complex plane are smoothly equivalent if they are equivalent under a possibly discontinuous family of biholomorphisms. We construct two smooth families of smoothly bounded domains in C^n for n>=1 that are equivalent under discontinuous families of biholomorphisms but not under any continuous family of biholomorphisms. Finally, we give sufficient conditions for the smooth equivalence of two smooth families of domains. This is joint work with Hervé Gaussier.<br />
<br />
===Keith Rush===<br />
<br />
Title: Guerilla warfare: ruling the data jungle<br />
<br />
Abstract: Einstein said ‘As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.’ In this epistemological chaos, the world turns to those experienced with mathematical truth to apply their reasoning powers in the uncertain domain of existence. This talk will describe the fact and fiction of this business reality, the pitfalls (intellectual, moral, and social) and the opportunities. I will discuss the state of business analytics today, at least in sports, the relationship of a pure mathematician to it, and what it is like to help lead the charge as applied mathematics eats the world.<br />
<br />
===Ebru Toprak===<br />
<br />
Title: Dispersive estimates for massive Dirac equations<br />
<br />
Abstract: In this talk, I will cover some existing L^1 \rightarrow L^\infty dispersive estimates for the linear Schr\"odinger equation with potential and present a related study on the two and three dimensional massive Dirac equation. In two dimension, we show that the t^{-1} decay rate holds if the threshold energies are regular or if there are s-wave resonances at the threshold. We further show that, if the threshold energies are regular then a faster decay rate of t^{-1}(\log t)^{-2} is attained for large t, at the cost of logarithmic spatial weights, which is not the case for the free Dirac equation. In three dimension, we show that the solution operator is composed of a finite rank operator that decays at the rate t^{-1/2} plus a term that decays at the rate t^{-3/2}. This is a joint work with M.Burak Erdo\u{g}an and William Green.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Fall_2017_and_Spring_2018_Analysis_Seminars&diff=17479Fall 2017 and Spring 2018 Analysis Seminars2019-06-03T20:40:27Z<p>Nagreen: </p>
<hr />
<div>'''Analysis Seminar<br />
'''<br />
<br />
The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.<br />
<br />
If you wish to invite a speaker please contact Brian at street(at)math<br />
<br />
===[[Previous Analysis seminars]]===<br />
<br />
= Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|Sept 11<br />
| Simon Marshall<br />
| UW Madison<br />
|[[#Simon Marshall | Integrals of eigenfunctions on hyperbolic manifolds ]]<br />
| <br />
|-<br />
|'''Wednesday, Sept 12'''<br />
| Gunther Uhlmann <br />
| University of Washington<br />
| Distinguished Lecture Series<br />
| See colloquium website for location<br />
|-<br />
|'''Friday, Sept 14'''<br />
| Gunther Uhlmann <br />
| University of Washington<br />
| Distinguished Lecture Series<br />
| See colloquium website for location<br />
|-<br />
|Sept 18<br />
| Grad Student Seminar<br />
| <br />
|<br />
|<br />
|-<br />
|Sept 25<br />
| Grad Student Seminar<br />
|<br />
|<br />
|<br />
|-<br />
|Oct 9<br />
| Hong Wang<br />
| MIT<br />
|[[#Hong Wang | About Falconer distance problem in the plane ]]<br />
| Ruixiang <br />
|-<br />
|Oct 16<br />
| Polona Durcik<br />
| Caltech<br />
|[[#Polona Durcik | Singular Brascamp-Lieb inequalities and extended boxes in R^n ]]<br />
| Joris <br />
|-<br />
|Oct 23<br />
| Song-Ying Li<br />
| UC Irvine<br />
|[[#Song-Ying Li | Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold ]]<br />
| Xianghong <br />
|-<br />
|Oct 30<br />
|Grad student seminar<br />
|<br />
|<br />
|<br />
|-<br />
|Nov 6<br />
| Hanlong Fang<br />
| UW Madison<br />
|[[#Hanlong Fang | A generalization of the theorem of Weil and Kodaira on prescribing residues ]]<br />
| Brian<br />
|-<br />
||'''Monday, Nov. 12, B139'''<br />
| Kyle Hambrook<br />
| San Jose State University<br />
|[[#Kyle Hambrook | Fourier Decay and Fourier Restriction for Fractal Measures on Curves ]]<br />
| Andreas<br />
|-<br />
|Nov 13<br />
| Laurent Stolovitch<br />
| Université de Nice - Sophia Antipolis<br />
|[[#Laurent Stolovitch | Equivalence of Cauchy-Riemann manifolds and multisummability theory ]]<br />
|Xianghong<br />
|-<br />
|Nov 20<br />
| Grad Student Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Nov 27<br />
| No Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Dec 4<br />
| No Seminar<br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Jan 22<br />
| Brian Cook<br />
| Kent<br />
|[[#Brian Cook | Equidistribution results for integral points on affine homogenous algebraic varieties ]]<br />
| Street<br />
|-<br />
|Jan 29<br />
| No Seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
|<br />
|-<br />
|Feb 5, '''B239'''<br />
| Alexei Poltoratski<br />
| Texas A&M<br />
|[[#Alexei Poltoratski | Completeness of exponentials: Beurling-Malliavin and type problems ]]<br />
| Denisov<br />
|-<br />
|'''Friday, Feb 8'''<br />
| Aaron Naber<br />
| Northwestern University<br />
|[[#linktoabstract | A structure theory for spaces with lower Ricci curvature bounds ]]<br />
| See colloquium website for location<br />
|-<br />
|Feb 12<br />
| Shaoming Guo<br />
| UW Madison<br />
|[[#Shaoming Guo | Polynomial Roth theorems in Salem sets ]]<br />
| <br />
|-<br />
|'''Wed, Feb 13, B239'''<br />
| Dean Baskin<br />
| TAMU<br />
|[[# Dean Baskin | Radiation fields for wave equations ]]<br />
| Colloquium<br />
|-<br />
|'''Friday, Feb 15'''<br />
| Lillian Pierce<br />
| Duke<br />
|[[#Lillian Pierce | Short character sums ]]<br />
| Colloquium<br />
|-<br />
|'''Monday, Feb 18, 3:30 p.m, B239.'''<br />
| Daniel Tataru<br />
| UC Berkeley<br />
|[[#Daniel Tataru | A Morawetz inequality for water waves ]]<br />
| PDE Seminar<br />
|-<br />
|Feb 19<br />
| Wenjia Jing <br />
|Tsinghua University<br />
|Periodic homogenization of Dirichlet problems in perforated domains: a unified proof<br />
| PDE Seminar<br />
|-<br />
|Feb 26<br />
| No Seminar<br />
|<br />
|<br />
|-<br />
|Mar 5<br />
| Loredana Lanzani<br />
| Syracuse University<br />
|[[#Loredana Lanzani | On regularity and irregularity of the Cauchy-Szegő projection in several complex variables ]]<br />
| Xianghong<br />
|-<br />
|Mar 12<br />
| Trevor Leslie<br />
| UW Madison<br />
|[[#Trevor Leslie | Energy Equality for the Navier-Stokes Equations at the First Possible Blowup Time ]]<br />
|<br />
|-<br />
|Mar 19<br />
|Spring Break!<br />
| <br />
|<br />
|<br />
|-<br />
|Mar 26<br />
| No seminar<br />
| <br />
|[[#linktoabstract | ]]<br />
| <br />
|-<br />
|Apr 2<br />
| Stefan Steinerberger<br />
| Yale<br />
|[[#Stefan Steinerberger | Wasserstein Distance as a Tool in Analysis ]]<br />
| Shaoming, Andreas<br />
|-<br />
<br />
|Apr 9<br />
| Franc Forstnerič <br />
| Unversity of Ljubljana<br />
|[[#Franc Forstnerič | Minimal surfaces by way of complex analysis ]]<br />
| Xianghong, Andreas<br />
|-<br />
|Apr 16<br />
| Andrew Zimmer<br />
| Louisiana State University<br />
|[[#Andrew Zimmer | The geometry of domains with negatively pinched Kaehler metrics ]]<br />
| Xianghong<br />
|-<br />
|Apr 23<br />
| Brian Street<br />
| University of Wisconsin-Madison<br />
|[[#Brian Street | Maximal Hypoellipticity ]]<br />
| Street<br />
|-<br />
|Apr 30<br />
| Zhen Zeng<br />
| UPenn<br />
|[[#Zhen Zeng | Decay property of multilinear oscillatory integrals ]]<br />
| Shaoming<br />
|-<br />
|*[https://www.math.wisc.edu/seeger2019/?q=node/2 Madison Lectures in Fourier Analysis]<br />
|-<br />
|Summer<br />
|-<br />
|Sept 10<br />
|Jose Madrid<br />
|UCLA<br />
|<br />
|Andreas, David<br />
|-<br />
|Oct 15<br />
|Bassam Shayya<br />
|American University of Beirut<br />
|<br />
|Andreas, Betsy<br />
<br />
|}<br />
<br />
=Abstracts=<br />
===Simon Marshall===<br />
<br />
''Integrals of eigenfunctions on hyperbolic manifolds''<br />
<br />
Let X be a compact hyperbolic manifold, and let Y be a totally geodesic closed submanifold in X. I will discuss the problem of bounding the integral of a Laplace eigenfunction on X over Y, as the eigenvalue tends to infinity. I will present an upper bound for these integrals that is sharp on average, and briefly describe ongoing work with Farrell Brumley in which we attempt to produce eigenfunctions with very large periods.<br />
<br />
<br />
===Hong Wang===<br />
<br />
''About Falconer distance problem in the plane''<br />
<br />
If E is a compact set of Hausdorff dimension greater than 5/4 on the plane, we prove that there is a point x\in E such that the set of distances between x and E has positive Lebesgue measure. Our result improves upon Wolff's theorem for dim E> 4/3. This is joint work with Larry Guth, Alex Iosevich and Yumeng Ou. <br />
<br />
===Polona Durcik===<br />
<br />
''Singular Brascamp-Lieb inequalities and extended boxes in R^n''<br />
<br />
Brascamp-Lieb inequalities are L^p estimates for certain multilinear forms on functions on Euclidean spaces. In this talk we consider singular Brascamp-Lieb inequalities, which arise when one of the functions is replaced by a Calderon-Zygmund kernel. We focus on a family of multilinear forms in R^n with a certain cubical structure and discuss their connection to some patterns in positive density subsets in R^n. Based on joint works with V. Kovac and C. Thiele.<br />
<br />
<br />
===Song-Ying Li===<br />
<br />
''Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold''<br />
<br />
In this talk, I will present my recent works with my collaborators on the lower bound and upper bounds estimates<br />
for the first positive eigenvalues of Kohn Laplacian and sub-Laplacian on a strictly pseudoconvex pseudo-Hermitian CR manifold,<br />
which include CR Lichnerowicz-Obata theorem for the lower and upper bounds for the first positive eigenvalue for the<br />
Kohn Laplacian on strictly pseudoconvex hypersurfaces.<br />
<br />
<br />
===Hanlong Fan===<br />
<br />
''A generalization of the theorem of Weil and Kodaira on prescribing residues''<br />
<br />
An old theorem of Weil and Kodaira says that: For a K\"ahler manifold X, there exists a closed meromorphic one-form with residue divisor D if and only if D is homologous to zero. In this talk, I will generalize Weil and Kodaira's criterion to non-K\"ahler manifolds.<br />
<br />
===Kyle Hambrook===<br />
<br />
''Fourier Decay and Fourier Restriction for Fractal Measures on Curves''<br />
<br />
I will discuss my recent work on some problems concerning<br />
Fourier decay and Fourier restriction for fractal measures on curves.<br />
<br />
===Laurent Stolovitch===<br />
<br />
''Equivalence of Cauchy-Riemann manifolds and multisummability theory''<br />
<br />
We apply the multisummability theory from Dynamical Systems to CR-geometry. As the main result, we show that two real-analytic hypersurfaces in $\mathbb C^2$ are formally equivalent, if and only if they are $C^\infty$ CR-equivalent at the respective point. As a corollary, we prove that all formal equivalences between real-algebraic Levi-nonflat hypersurfaces in $\mathbb C^2$ are algebraic (and in particular convergent). This is a joint work with I. Kossovskiy and B. Lamel.<br />
<br />
<br />
===Brian Cook===<br />
<br />
''Equidistribution results for integral points on affine homogenous algebraic varieties''<br />
<br />
Let Q be a homogenous integral polynomial of degree at least two. We consider certain results and questions concerning the distribution of the integral points on the level sets of Q.<br />
<br />
===Alexei Poltoratski===<br />
<br />
''Completeness of exponentials: Beurling-Malliavin and type problems''<br />
<br />
This talk is devoted to two old problems of harmonic analysis mentioned in the title. Both problems ask when a family of complex exponentials is complete (spans) an L^2-space. The Beruling-Malliavin problem was solved in the early 1960s and I will present its classical solution along with modern generalizations and applications. I will then discuss history and recent progress in the type problem, which stood open for more than 70 years.<br />
<br />
<br />
===Shaoming Guo===<br />
<br />
''Polynomial Roth theorems in Salem sets''<br />
<br />
Let P(t) be a polynomial of one real variable. I will report a result on searching for patterns of the form (x, x+t, x+P(t)) within Salem sets, whose Hausdorff dimension is sufficiently close to one. Joint work with Fraser and Pramanik. <br />
<br />
<br />
<br />
<br />
===Dean Baskin===<br />
<br />
''Radiation fields for wave equations''<br />
<br />
Radiation fields are rescaled limits of solutions of wave equations near "null infinity" and capture the radiation pattern seen by a distant observer. They are intimately connected with the Fourier and Radon transforms and with scattering theory. In this talk, I will define and discuss radiation fields in a few contexts, with an emphasis on spacetimes that look flat near infinity. The main result is a connection between the asymptotic behavior of the radiation field and a family of quantum objects on an associated asymptotically hyperbolic space.<br />
<br />
===Lillian Pierce===<br />
<br />
''Short character sums''<br />
<br />
A surprisingly diverse array of problems in analytic number theory have at their heart a problem of bounding (from above) an exponential sum, or its multiplicative cousin, a so-called character sum. For example, both understanding the Riemann zeta function or Dirichlet L-functions inside the critical strip, and also counting solutions to Diophantine equations via the circle method or power sieve methods, involve bounding such sums. In general, the sums of interest fall into one of two main regimes: complete sums or incomplete sums, with this latter regime including in particular “short sums.” Short sums are particularly useful, and particularly resistant to almost all known methods. In this talk, we will see what makes a sum “short,” sketch why it would be incredibly powerful to understand short sums, and discuss a curious proof from the 1950’s which is still the best way we know to bound short sums. We will end by describing new work which extends the ideas of this curious proof to bound short sums in much more general situations.<br />
<br />
===Loredana Lanzani===<br />
<br />
''On regularity and irregularity of the Cauchy-Szegő projection in several complex variables''<br />
<br />
This talk is a survey of my latest, and now final, collaboration with Eli Stein.<br />
<br />
It is known that for bounded domains $D$ in $\mathbb C^n$ that are of class $C^2$ and are strongly pseudo-convex, the Cauchy-Szegő projection is bounded in $L^p(\text{b}D, d\Sigma)$ for $1<p<\infty$. (Here $d\Sigma$ is induced Lebesgue measure.) We show, using appropriate worm domains, that this fails for any $p\neq 2$, when we assume that the domain in question is only weakly pseudo-convex. Our starting point are the ideas of Kiselman-Barrett introduced more than 30 years ago in the analysis of the Bergman projection. However the study of the Cauchy-Szegő projection raises a number of new issues and obstacles that need to be overcome. We will also compare these results to the analogous problem for the Cauchy-Leray integral, where however the relevant counter-example is of much simpler nature.<br />
<br />
===Trevor Leslie===<br />
<br />
''Energy Equality for the Navier-Stokes Equations at the First Possible Blowup Time''<br />
<br />
In this talk, we discuss the problem of energy equality for strong solutions of the Navier-Stokes Equations (NSE) at the first time where such solutions may lose regularity. Our approach is motivated by a famous theorem of Caffarelli, Kohn, and Nirenberg, which states that the set of singular points associated to a suitable weak solution of the NSE has parabolic Hausdorff dimension of at most 1. In particular, we furnish sufficient conditions for energy equality which depend on the dimension of the singularity set in addition to time and space integrability assumptions; in doing so we improve upon the classical results when attention is restricted to the first blowup time. When our method is inconclusive, we are able to quantify the possible failure of energy equality in terms of the lower local dimension and the ''concentration dimension'' of a certain measure associated to the solution. The work described is joint with Roman Shvydkoy (UIC).<br />
<br />
===Stefan Steinerberger===<br />
<br />
''Wasserstein Distance as a Tool in Analysis''<br />
<br />
Wasserstein Distance is a way of measuring the distance between two probability distributions (minimizing it is a main problem in Optimal Transport). We will give a gentle Introduction into what it means and then use it to prove (1) a completely elementary but possibly new and quite curious inequality for real-valued functions and (2) a statement along the following lines: linear combinations of eigenfunctions of elliptic operators corresponding to high frequencies oscillate a lot and vanish on a large set of co-dimension 1 (this is already interesting for trigonometric polynomials on the 2-torus, sums of finitely many sines and cosines, whose sum has to vanish on long lines) and (3) some statements in Basic Analytic Number Theory that drop out for free as a byproduct.<br />
<br />
===Franc Forstnerič===<br />
<br />
''Minimal surfaces by way of complex analysis''<br />
<br />
After a brief historical introduction, I will present some recent developments in the theory of minimal surfaces in Euclidean spaces which have been obtained by complex analytic methods. The emphasis will be on results pertaining to the global theory of minimal surfaces including Runge and Mergelyan approximation, the conformal Calabi-Yau problem, properly immersed and embedded minimal surfaces, and a new result on the Gauss map of minimal surfaces.<br />
<br />
===Andrew Zimmer===<br />
<br />
''The geometry of domains with negatively pinched Kaehler metrics''<br />
<br />
Every bounded pseudoconvex domain in C^n has a natural complete metric: the Kaehler-Einstein metric constructed by Cheng-Yau. When the boundary of the domain is strongly pseudoconvex, Cheng-Yau showed that the holomorphic sectional curvature of this metric is asymptotically a negative constant. In this talk I will describe some partial converses to this result, including the following: if a smoothly bounded convex domain has a complete Kaehler metric with close to constant negative holomorphic sectional curvature near the boundary, then the domain is strongly pseudoconvex. This is joint work with F. Bracci and H. Gaussier.<br />
<br />
<br />
===Brian Street===<br />
<br />
''Maximal Hypoellipticity''<br />
<br />
In 1974, Folland and Stein introduced a generalization of ellipticity known as maximal hypoellipticity. This talk will be an introduction to this concept and some of the ways it generalizes ellipticity.<br />
<br />
<br />
===Zhen Zeng===<br />
<br />
''Decay property of multilinear oscillatory integrals''<br />
<br />
In this talk, I will be talking about the conditions of the phase function $P$ and the linear mappings $\{\pi_i\}_{i=1}^n$ to ensure the asymptotic power decay properties of the following trilinear oscillatory integrals <br />
\[<br />
I_{\lambda}(f_1,f_2,f_3)=\int_{\mathbb{R}^m}e^{i\lambda P(x)}\prod_{j=1}^3 f_j(\pi_j(x))\eta(x)dx, <br />
\]<br />
which falls into the broad goal in the previous work of Christ, Li, Tao and Thiele.<br />
<br />
<br />
<br />
= 2017-2018 Analysis Seminar Schedule =<br />
{| cellpadding="8"<br />
!align="left" | date <br />
!align="left" | speaker<br />
|align="left" | '''institution'''<br />
!align="left" | title<br />
!align="left" | host(s)<br />
|-<br />
|September 8 in B239 (Colloquium)<br />
| Tess Anderson<br />
| UW Madison<br />
|[[#linktoabstract | A Spherical Maximal Function along the Primes]]<br />
|Tonghai<br />
|-<br />
|September 19<br />
| Brian Street<br />
| UW Madison<br />
|[[#Brian Street | Convenient Coordinates ]]<br />
| Betsy<br />
|-<br />
|September 26<br />
| Hiroyoshi Mitake<br />
| Hiroshima University<br />
|[[#Hiroyoshi Mitake | Derivation of multi-layered interface system and its application ]]<br />
| Hung<br />
|-<br />
|October 3<br />
| Joris Roos<br />
| UW Madison<br />
|[[#Joris Roos | A polynomial Roth theorem on the real line ]]<br />
| Betsy<br />
|-<br />
|October 10<br />
| Michael Greenblatt<br />
| UI Chicago<br />
|[[#Michael Greenblatt | Maximal averages and Radon transforms for two-dimensional hypersurfaces ]]<br />
| Andreas<br />
|-<br />
|October 17<br />
| David Beltran<br />
| Basque Center of Applied Mathematics<br />
|[[#David Beltran | Fefferman-Stein inequalities ]]<br />
| Andreas<br />
|-<br />
|Wednesday, October 18, 4:00 p.m. in B131<br />
|Jonathan Hickman<br />
|University of Chicago<br />
|[[#Jonathan Hickman | Factorising X^n ]]<br />
|Andreas<br />
|-<br />
|October 24<br />
| Xiaochun Li<br />
| UIUC<br />
|[[#Xiaochun Li | Recent progress on the pointwise convergence problems of Schroedinger equations ]]<br />
| Betsy<br />
|-<br />
|Thursday, October 26, 4:30 p.m. in B139<br />
| Fedor Nazarov<br />
| Kent State University<br />
|[[#Fedor Nazarov | The Lerner-Ombrosi-Perez bound in the Muckenhoupt Wheeden conjecture is sharp ]]<br />
| Sergey, Andreas<br />
|-<br />
|Friday, October 27, 4:00 p.m. in B239<br />
| Stefanie Petermichl<br />
| University of Toulouse<br />
|[[#Stefanie Petermichl | Higher order Journé commutators ]]<br />
| Betsy, Andreas<br />
|-<br />
|Wednesday, November 1, 4:00 p.m. in B239 (Colloquium)<br />
| Shaoming Guo<br />
| Indiana University<br />
|[[#Shaoming Guo | Parsell-Vinogradov systems in higher dimensions ]]<br />
| Andreas<br />
|-<br />
|November 14<br />
| Naser Talebizadeh Sardari<br />
| UW Madison<br />
|[[#Naser Talebizadeh Sardari | Quadratic forms and the semiclassical eigenfunction hypothesis ]]<br />
| Betsy<br />
|-<br />
|November 28<br />
| Xianghong Chen<br />
| UW Milwaukee<br />
|[[#Xianghong Chen | Some transfer operators on the circle with trigonometric weights ]]<br />
| Betsy<br />
|-<br />
|Monday, December 4, 4:00, B139<br />
| Bartosz Langowski and Tomasz Szarek<br />
| Institute of Mathematics, Polish Academy of Sciences<br />
|[[#Bartosz Langowski and Tomasz Szarek | Discrete Harmonic Analysis in the Non-Commutative Setting ]]<br />
| Betsy<br />
|-<br />
|Wednesday, December 13, 4:00, B239 (Colloquium)<br />
|Bobby Wilson <br />
|MIT<br />
|[[#Bobby Wilson | Projections in Banach Spaces and Harmonic Analysis ]]<br />
| Andreas<br />
|-<br />
| Monday, February 5, 3:00-3:50, B341 (PDE-GA seminar)<br />
| Andreas Seeger<br />
| UW<br />
|[[#Andreas Seeger | Singular integrals and a problem on mixing flows]] <br />
|<br />
|-<br />
|February 6<br />
| Dong Dong<br />
| UIUC<br />
| [[#Dong Dong | Hibert transforms in a 3 by 3 matrix and applications in number theory]]<br />
|Betsy<br />
|-<br />
|February 13<br />
| Sergey Denisov<br />
| UW Madison<br />
| [[#Sergey Denisov | Spectral Szegő theorem on the real line]]<br />
| <br />
|-<br />
|February 20<br />
| Ruixiang Zhang <br />
| IAS (Princeton)<br />
| [[#Ruixiang Zhang | The (Euclidean) Fractal Uncertainty Principle]]<br />
| Betsy, Jordan, Andreas<br />
|-<br />
|February 27<br />
|Detlef Müller <br />
|University of Kiel<br />
| [[#Detlef Müller | On Fourier restriction for a non-quadratic hyperbolic surface]]<br />
|Betsy, Andreas<br />
|-<br />
|Wednesday, March 7, 4:00 p.m.<br />
| Winfried Sickel <br />
|Friedrich-Schiller-Universität Jena<br />
| [[#Winfried Sickel | On the regularity of compositions of functions]]<br />
|Andreas<br />
|-<br />
|March 20<br />
| Betsy Stovall<br />
| UW<br />
| [[#linkofabstract | Two endpoint bounds via inverse problems]]<br />
|<br />
|-<br />
|April 10<br />
| Martina Neuman<br />
| UC Berkeley<br />
| [[#Martina Neuman | Gowers-Host-Kra norms and Gowers structure on Euclidean spaces]]<br />
| Betsy<br />
|-<br />
|Friday, April 13, 4:00 p.m. (Colloquium, 911 VV)<br />
|Jill Pipher<br />
|Brown<br />
| [[#Jill Pipher | Mathematical ideas in cryptography]]<br />
|WIMAW<br />
|-<br />
|April 17<br />
| <br />
| <br />
| [[#linkofabstract | Title]]<br />
|<br />
|-<br />
|April 24<br />
| Lenka Slavíková<br />
| University of Missouri<br />
| [[#Lenka Slavíková | <math>L^2 \times L^2 \to L^1</math> boundedness criteria]]<br />
|Betsy, Andreas<br />
|-<br />
|May 1 '''at 3:30pm'''<br />
| Xianghong Gong<br />
| UW<br />
| [[#Xianghong Gong | Smooth equivalence of deformations of domains in complex euclidean spaces]]<br />
|<br />
|-<br />
| '''May 2 in B239 at 4pm'''<br />
| Keith Rush<br />
| senior data scientist with the Milwaukee Brewers<br />
| [[#Keith Rush | Guerilla warfare: ruling the data jungle]]<br />
|-<br />
| '''May 7''' in '''B223'''<br />
| Ebru Toprak<br />
| UIUC<br />
| [[#Ebru Toprak |Dispersive estimates for massive Dirac equations]]<br />
|Betsy<br />
|-<br />
| '''May 15'''<br />
| Gennady Uraltsev<br />
| Cornell<br />
| [[#linkofabstract | TBA]]<br />
| Andreas, Betsy<br />
|-<br />
| May 16-18, [http://www.math.wisc.edu/~stovall/FA2018/ Workshop in Fourier Analysis]<br />
|<br />
|<br />
|<br />
|Betsy, Andreas<br />
|-<br />
|}<br />
<br />
=Abstracts=<br />
===Brian Street===<br />
<br />
Title: Convenient Coordinates<br />
<br />
Abstract: We discuss the method of picking a convenient coordinate system adapted to vector fields. Let X_1,...,X_q be either real or complex C^1 vector fields. We discuss the question of when there is a coordinate system in which the vector fields are smoother (e.g., C^m, or C^\infty, or real analytic). By answering this in a quantitative way, we obtain coordinate charts which can be used as generalized scaling maps. When the vector fields are real this is joint work with Stovall, and continues in the line of quantitative sub-Riemannian geometry initiated by Nagel, Stein, and Wainger. When the vector fields are complex one obtains a geometry with more structure which can be thought of as "sub-Hermitian".<br />
<br />
===Hiroyoshi Mitake===<br />
<br />
Title: Derivation of multi-layered interface system and its application<br />
<br />
Abstract: In this talk, I will propose a multi-layered interface system which can <br />
be formally derived by the singular limit of the weakly coupled system of <br />
the Allen-Cahn equation. By using the level set approach, this system can be <br />
written as a quasi-monotone degenerate parabolic system. <br />
We give results of the well-posedness of viscosity solutions, and study the <br />
singularity of each layers. This is a joint work with H. Ninomiya, K. Todoroki.<br />
<br />
===Joris Roos===<br />
<br />
Title: A polynomial Roth theorem on the real line<br />
<br />
Abstract: For a polynomial P of degree greater than one, we show the existence of patterns of the form (x,x+t,x+P(t)) with a gap estimate on t in positive density subsets of the reals. This is an extension of an earlier result of Bourgain. Our proof is a combination of Bourgain’s approach and more recent methods that were originally developed for the study of the bilinear Hilbert transform along curves. This talk is based on a joint work with Polona Durcik and Shaoming Guo.<br />
<br />
===Michael Greenblatt===<br />
<br />
Title: Maximal averages and Radon transforms for two-dimensional hypersurfaces<br />
<br />
Abstract: A general local result concerning L^p boundedness of maximal averages over 2D hypersurfaces is described, where p > 2. The surfaces are allowed to have either the traditional smooth density function or a singularity growing as |(x,y)|^{-t} for some 0 < t < 2. This result is a generalization of a theorem of Ikromov, Kempe, and Mueller. Similar methods can be used to show sharp L^p to L^p_a Sobolev estimates for associated Radon transform operators when p is in a certain interval containing 2.<br />
<br />
===David Beltran===<br />
<br />
Title: Fefferman Stein Inequalities<br />
<br />
Abstract: Given an operator T, we focus on obtaining two-weighted inequalities in which the weights are related via certain maximal function. These inequalites, which originated in work of Fefferman and Stein, have been established in an optimal way for different classical operators in Harmonic Analysis. In this talk, we survey some classical results and we present some recent Fefferman-Stein inequalities for pseudodifferential operators and for the solution operators to dispersive equations.<br />
<br />
===Jonathan Hickman===<br />
<br />
Title: Factorising X^n.<br />
<br />
Question: how many ways can the polynomial $X^n$ be factorised as a product of linear factors? Answer: it depends on the ring... In this talk I will describe joint work with Jim Wright investigating certain exponential sum estimates over rings of integers modulo N. This theory serves as a discrete analogue of the (euclidean) Fourier restriction problem, a central question in contemporary harmonic analysis. In particular, as part of this study, the question of counting the number of factorisations of polynomials over such rings naturally arises. I will describe how these number-theoretic considerations can themselves be approached via methods from harmonic analysis.<br />
<br />
===Xiaochun Li ===<br />
<br />
Title: Recent progress on the pointwise convergence problems of Schrodinger equations<br />
<br />
Abstract: Recently, Guth, Du and I solved the pointwise convergence problem of Schrodinger equations in two-dimensional case. We proved that the solution to free Schrodinger equation in R^2 converges to its initial data, provided the initial data belongs to H^s for s larger than 1/3. This result is sharp, up to the end point, due to Bourgain's example. The proof relies on the polynomial partitioning method and the decoupling method. In addition, the pointwise convergence problem is closely related to Fourier restriction conjecture.<br />
<br />
===Fedor Nazarov=== <br />
<br />
Title: The Lerner-Ombrosi-Perez bound in the Muckenhoupt-Wheeden<br />
conjecture is sharp.<br />
<br />
Abstract: We show that the upper bound $[w]_{A_1}\log (e+[w]_{A_1})$ for<br />
the norm of the Hilbert transform on the line as an operator from $L^1(w)$<br />
to $L^{1,\infty}(w)$ cannot be improved in general. This is a joint work<br />
with Andrei Lerner and Sheldy Ombrosi.<br />
<br />
===Stefanie Petermichl===<br />
Title: Higher order Journé commutators<br />
<br />
Abstract: We consider questions that stem from operator theory via Hankel and<br />
Toeplitz forms and target (weak) factorisation of Hardy spaces. In<br />
more basic terms, let us consider a function on the unit circle in its<br />
Fourier representation. Let P_+ denote the projection onto<br />
non-negative and P_- onto negative frequencies. Let b denote<br />
multiplication by the symbol function b. It is a classical theorem by<br />
Nehari that the composed operator P_+ b P_- is bounded on L^2 if and<br />
only if b is in an appropriate space of functions of bounded mean<br />
oscillation. The necessity makes use of a classical factorisation<br />
theorem of complex function theory on the disk. This type of question<br />
can be reformulated in terms of commutators [b,H]=bH-Hb with the<br />
Hilbert transform H=P_+ - P_- . Whenever factorisation is absent, such<br />
as in the real variable setting, in the multi-parameter setting or<br />
other, these classifications can be very difficult.<br />
<br />
Such lines were begun by Coifman, Rochberg, Weiss (real variables) and<br />
by Cotlar, Ferguson, Sadosky (multi-parameter) of characterisation of<br />
spaces of bounded mean oscillation via L^p boundedness of commutators.<br />
We present here an endpoint to this theory, bringing all such<br />
characterisation results under one roof.<br />
<br />
The tools used go deep into modern advances in dyadic harmonic<br />
analysis, while preserving the Ansatz from classical operator theory.<br />
<br />
===Shaoming Guo ===<br />
Title: Parsell-Vinogradov systems in higher dimensions<br />
<br />
Abstract: <br />
I will present a few results on counting the numbers of integer solutions of Parsell-Vinogradov systems in higher dimensions.<br />
Applications to Waring’s problem and to the problem of counting rational linear subspaces lying on certain hyper-surface will be discussed.<br />
Joint works with Jean Bourgain, Ciprian Demeter and Ruixiang Zhang.<br />
<br />
===Naser Talebizadeh Sardari===<br />
<br />
Title: Quadratic forms and the semiclassical eigenfunction hypothesis<br />
<br />
Abstract: Let <math>Q(X)</math> be any integral primitive positive definite quadratic form in <math>k</math> variables, where <math>k\geq4</math>, and discriminant <math>D</math>. For any integer <math>n</math>, we give an upper bound on the number of integral solutions of <math>Q(X)=n</math> in terms of <math>n</math>, <math>k</math>, and <math>D</math>. As a corollary, we prove a conjecture of Lester and Rudnick on the small scale equidistribution of almost all functions belonging to any orthonormal basis of a given eigenspace of the Laplacian on the flat torus <math>\mathbb{T}^d</math> for <math>d\geq 5</math>. This conjecture is motivated by the work of Berry\cite{Berry, Michael} on semiclassical eigenfunction hypothesis.<br />
<br />
===Xianghong Chen===<br />
<br />
Title: Some transfer operators on the circle with trigonometric weights<br />
<br />
Abstract: A transfer operator is an averaging operator over the preimages of a given map. Certain dynamical properties of the map can be studied through its associated transfer operator. In this talk we will introduce a class of weighted transfer operators associated to the Bernoulli maps on the circle (i.e. multiplication by a given integer, mod 1). We will illustrate how the spectral properties of these operators may depend on the specific weight chosen and demonstrate multiple phase transitions. We also present some results on evaluating the spectral radii and corresponding eigenfunctions of these operators, as well as their connections to Fourier analysis. This is joint work with Hans Volkmer. <br />
<br />
===Bobby Wilson===<br />
<br />
Title: Projections in Banach Spaces and Harmonic Analysis<br />
<br />
Abstract: In this talk, we will discuss the measure theoretic principles of orthogonal projections that follow from the classical Besicovitch-Federer projection theorem. The Besicovitch-Federer projection theorem offers a characterization of rectifiability of one-dimensional sets in R^d by the size of their projections to lines. We will focus on the validity of analogues to the Besicovitch-Federer projection theorem with respect to such sets in general Banach spaces. In particular, we will show that the projection theorem is false when the Banach space is infinite-dimensional and discuss related applications to questions in Harmonic Analysis. This is joint work with Marianna Csornyei and David Bate.<br />
<br />
===Andreas Seeger===<br />
<br />
Title: Singular integrals and a problem on mixing flows<br />
<br />
Abstract: The talk will be about results related to Bressan's mixing problem. We present an inequality for the change of a Bianchini semi-norm of characteristic functions under the flow generated by a divergence free time dependent vector field. The approach leads to a bilinear singular integral operator for which one proves bounds on Hardy spaces. This is joint work with Mahir Hadžić, Charles Smart and Brian Street.<br />
<br />
===Dong Dong===<br />
<br />
Title: Hibert transforms in a 3 by 3 matrix and applications in number theory<br />
<br />
Abstract: This talk could interest both analysts and number theorists. I will first present 35 variants of Hilbert transforms, with a focus on their connections with ergodic theory, number theory, and combinatorics. Then I will show how to use Fourier analysis tools to reduce a number theory problem (Roth theorem) to an algebraic geometry problem: this joint work Li and Sawin fully answers a question of Bourgain and Chang about three-term polynomial progressions in subsets of finite fields. I guarantee that a second-year graduate student can understand at least 50% of the talk.<br />
<br />
===Sergey Denisov===<br />
<br />
Title: Spectral Szegő theorem on the real line<br />
<br />
Abstract: For even measures on the real line, we give the criterion for the logarithmic integral to converge in terms of the corresponding De-Branges system (or Krein's string). The applications to probability (linear prediction for stationary Gaussian processes) will be explained. This is the joint result with R. Bessonov.<br />
<br />
===Ruixiang Zhang===<br />
<br />
Title: The (Euclidean) Fractal Uncertainty Principle<br />
<br />
Abstract: On the real line, a version of the uncertainty principle says: If a nonzero function f has its Fourier support lying in B and |A||B| is much smaller than 1, then the L^2 norm of f on A cannot be close to the whole L^2 norm of f. Recently, Bourgain and Dyatlov proved a Fractal Uncertainty Principle (FUP) which has a similar statement. The difference is that in FUP the product of |A| and |B| can be much bigger, but A and B both have to be porous at many scales. We will introduce the theorem and then discuss some unusual features of its proof, most notably the application of the Beurling-Malliavin Theorem. In the original work the dependence on the dimensions of both fractals was ineffective. We will also discuss why we can overcome this ineffectivity (joint work with Long Jin).<br />
<br />
===Detlef Müller===<br />
<br />
Title: On Fourier restriction for a non-quadratic hyperbolic surface<br />
<br />
Abstract: In contrast to what is known about Fourier restriction for elliptic surfaces, rather little is known about hyperbolic surfaces. Hitherto, basically only the quadric $z=xy$ had been studied successfully. In my talk, after giving some background on Fourier restriction, I shall report on recent joint work with S. Buschenhenke and A. Vargas on a cubic perturbation of this quadric. Our analysis reveals that the geometry of the problem changes drastically in the presence of a perturbation term, and that new techniques, compared to the elliptic case, are required to handle more general hyperbolic surfaces.<br />
<br />
===Winfried Sickel===<br />
<br />
Title: On the regularity of compositions of functions<br />
<br />
Abstract: Let <math>E</math> denote a Banach space of locally integrable functions on <math>\mathbb{R}</math>. To each continuous function <math>f:\mathbb{R} \to \mathbb{R}</math><br />
we associate the composition operator<br />
<math>T_f(g):= f\circ g</math>, <math>g\in E</math>. <br />
The properties of <math>T_f</math> strongly depend on the chosen function space <math>E</math>.<br />
In my talk I will concentrate on Sobolev spaces <math>W^m_p</math> and Slobodeckij spaces <math>W^s_p</math>.<br />
The main aim will consist in giving a survey on necessary and sufficient conditions on <math>f</math><br />
such that the composition operator maps such a space <math>E</math> into itself.<br />
<br />
===Martina Neuman===<br />
<br />
Title: Gowers-Host-Kra norms and Gowers structure on Euclidean spaces<br />
<br />
Abstract: The investigation on Brascamp-Lieb data - their structure, their extremizability, their stability and regularity of their constants - has been an active one in Harmonic Analysis. In this talk, I'll present an example of a Brascamp-Lieb structure: a so-called Gowers structure on Euclidean spaces, together with the related Gowers-Host-Kra norms - these were originally tools in additive combinatorics context. I'll dissertate on what happens when a function nearly achieves its Gowers-Host-Kra norm in a Euclidean context - this can be seen as continuation of the work of Eisner-Tao - and a related stability result of the Gowers structure on Euclidean spaces.<br />
<br />
===Jill Pipher===<br />
<br />
Title: Mathematical ideas in cryptography<br />
<br />
Abstract: This talk does not assume prior knowledge of public key crypto (PKC). I'll talk about the history of the subject and some current areas of research,<br />
including homomorphic encryption.<br />
<br />
===Lenka Slavíková===<br />
<br />
Title: <math>L^2 \times L^2 \to L^1</math> boundedness criteria<br />
<br />
Abstract: It is a consequence of Plancherel's identity that a linear multiplier operator associated with a function <math>m</math> is bounded from <math>L^2</math> to itself if and only if <math>m</math> belongs to the space <math>L^\infty</math>. In this talk we will investigate the <math>L^2 \times L^2 \to L^1</math> boundedness of bilinear multiplier operators which is as central in the bilinear theory as the <math>L^2</math> boundedness is in the linear multiplier theory. We will present a sharp <math>L^2 \times L^2 \to L^1</math> boundedness criterion for a class of bilinear operators associated with a multiplier given by a signed sum of dyadic dilations of a given function, in terms of the <math>L^q</math> integrability of this function; precisely we will show that boundedness holds if and only if <math>q<4</math>. We will then discuss applications of this result concerning bilinear rough singular integrals and bilinear dyadic spherical maximal functions. This is a joint work with L. Grafakos and D. He.<br />
<br />
===Xianghong Gong===<br />
<br />
Title: Smooth equivalence of deformations of domains in complex euclidean spaces<br />
<br />
Abstract: We prove that two smooth families of 2-connected domains in the complex plane are smoothly equivalent if they are equivalent under a possibly discontinuous family of biholomorphisms. We construct two smooth families of smoothly bounded domains in C^n for n>=1 that are equivalent under discontinuous families of biholomorphisms but not under any continuous family of biholomorphisms. Finally, we give sufficient conditions for the smooth equivalence of two smooth families of domains. This is joint work with Hervé Gaussier.<br />
<br />
===Keith Rush===<br />
<br />
Title: Guerilla warfare: ruling the data jungle<br />
<br />
Abstract: Einstein said ‘As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.’ In this epistemological chaos, the world turns to those experienced with mathematical truth to apply their reasoning powers in the uncertain domain of existence. This talk will describe the fact and fiction of this business reality, the pitfalls (intellectual, moral, and social) and the opportunities. I will discuss the state of business analytics today, at least in sports, the relationship of a pure mathematician to it, and what it is like to help lead the charge as applied mathematics eats the world.<br />
<br />
===Ebru Toprak===<br />
<br />
Title: Dispersive estimates for massive Dirac equations<br />
<br />
Abstract: In this talk, I will cover some existing L^1 \rightarrow L^\infty dispersive estimates for the linear Schr\"odinger equation with potential and present a related study on the two and three dimensional massive Dirac equation. In two dimension, we show that the t^{-1} decay rate holds if the threshold energies are regular or if there are s-wave resonances at the threshold. We further show that, if the threshold energies are regular then a faster decay rate of t^{-1}(\log t)^{-2} is attained for large t, at the cost of logarithmic spatial weights, which is not the case for the free Dirac equation. In three dimension, we show that the solution operator is composed of a finite rank operator that decays at the rate t^{-1/2} plus a term that decays at the rate t^{-3/2}. This is a joint work with M.Burak Erdo\u{g}an and William Green.</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=AMS_Student_Chapter_Seminar&diff=17310AMS Student Chapter Seminar2019-04-12T20:14:51Z<p>Nagreen: /* April 17, Hyun-Jong Kim */</p>
<hr />
<div>The AMS Student Chapter Seminar is an informal, graduate student seminar on a wide range of mathematical topics. Pastries (usually donuts) will be provided.<br />
<br />
* '''When:''' Wednesdays, 3:20 PM – 3:50 PM<br />
* '''Where:''' Van Vleck, 9th floor lounge (unless otherwise announced)<br />
* '''Organizers:''' [https://www.math.wisc.edu/~malexis/ Michel Alexis], [https://www.math.wisc.edu/~drwagner/ David Wagner], [http://www.math.wisc.edu/~nicodemus/ Patrick Nicodemus], [http://www.math.wisc.edu/~thaison/ Son Tu]<br />
<br />
Everyone is welcome to give a talk. To sign up, please contact one of the organizers with a title and abstract. Talks are 30 minutes long and should avoid assuming significant mathematical background beyond first-year graduate courses.<br />
<br />
The schedule of talks from past semesters can be found [[AMS Student Chapter Seminar, previous semesters|here]].<br />
<br />
== Spring 2019 ==<br />
<br />
=== February 6, Xiao Shen (in VV B139)===<br />
<br />
Title: Limit Shape in last passage percolation<br />
<br />
Abstract: Imagine the following situation, attached to each point on the integer lattice Z^2 there is an arbitrary amount of donuts. Fix x and y in Z^2, if you get to eat all the donuts along an up-right path between these two points, what would be the maximum amount of donuts you can get? This model is often called last passage percolation, and I will discuss a classical result about its scaling limit: what happens if we zoom out and let the distance between x and y tend to infinity.<br />
<br />
=== February 13, Michel Alexis (in VV B139)===<br />
<br />
Title: An instructive yet useless theorem about random Fourier Series<br />
<br />
Abstract: Consider a Fourier series with random, symmetric, independent coefficients. With what probability is this the Fourier series of a continuous function? An <math>L^{p}</math> function? A surprising result is the Billard theorem, which says such a series results almost surely from an <math>L^{\infty}</math> function if and only if it results almost surely from a continuous function. Although the theorem in of itself is kind of useless in of itself, its proof is instructive in that we will see how, via the principle of reduction, one can usually just pretend all symmetric random variables are just coin flips (Bernoulli trials with outcomes <math>\pm 1</math>).<br />
<br />
=== February 20, Geoff Bentsen ===<br />
<br />
Title: An Analyst Wanders into a Topology Conference<br />
<br />
Abstract: Fourier Restriction is a big open problem in Harmonic Analysis; given a "small" subset <math>E</math> of <math>R^d</math>, can we restrict the Fourier transform of an <math>L^p</math> function to <math>E</math> and retain any information about our original function? This problem has a nice (somewhat) complete solution for smooth manifolds of co-dimension one. I will explore how to start generalizing this result to smooth manifolds of higher co-dimension, and how a topology paper from the 60s about the hairy ball problem came in handy along the way.<br />
<br />
=== February 27, James Hanson ===<br />
<br />
Title: What is...a Topometric Space?<br />
<br />
Abstract: Continuous first-order logic is a generalization of first-order logic that is well suited for the study of structures with a natural metric, such as Banach spaces and probability algebras. Topometric spaces are a simple generalization of topological and metric spaces that arise in the study of continuous first-order logic. I will discuss certain topological issues that show up in topometric spaces coming from continuous logic, as well as some partial solutions and open problems. No knowledge of logic will be required for or gained from attending the talk.<br />
<br />
=== March 6, Working Group to establish an Association of Mathematics Graduate Students ===<br />
<br />
Title: Introducing GRAMS (Graduate Representative Association of Mathematics Students)<br />
<br />
Abstract: Over the past couple months, a handful of us have been working to create the UW Graduate Representative Association of Mathematics Students (GRAMS). This group, about 5-8 students, is intended to be a liaison between the graduate students and faculty, especially in relation to departmental policies and decisions that affect graduate students. We will discuss what we believe GRAMS ought to look like and the steps needed to implement such a vision, then open up the floor to a Q&A. Check out our [http://sites.google.com/wisc.edu/grams/home website] for more information.<br />
<br />
=== March 13, Connor Simpson ===<br />
<br />
Title: Counting faces of polytopes with algebra<br />
<br />
Abstract: A natural question is: with a fixed dimension and number of vertices, what is the largest number of d-dimensional faces that a polytope can have? We will outline a proof of the answer to this question.<br />
<br />
=== March 26 (Prospective Student Visit Day), Multiple Speakers ===<br />
<br />
====Eva Elduque, 11-11:25====<br />
<br />
Title: Will it fold flat?<br />
<br />
Abstract: Picture the traditional origami paper crane. It is a 3D object, but if you don’t make the wings stick out, it is flat. This is the case for many origami designs, ranging from very simple (like a paper hat), to complicated tessellations. Given a crease pattern on a piece of paper, one might wonder if it is possible to fold along the lines of the pattern and end up with a flat object. We’ll discuss necessary and sufficient conditions for a crease pattern with only one vertex to fold flat, and talk about what can be said about crease patterns with multiple vertices.<br />
<br />
====Soumya Sankar, 11:30-11:55====<br />
<br />
Title: An algebro-geometric perspective on integration<br />
<br />
Abstract: Integrals are among the most basic tools we learn in complex analysis and yet are extremely versatile. I will discuss one way in which integrals come up in algebraic geometry and the surprising amount of arithmetic and geometric information this gives us.<br />
<br />
====Chun Gan, 12:00-12:25====<br />
<br />
Title: Extension theorems in complex analysis<br />
<br />
Abstract: Starting from Riemann's extension theorem in one complex variable, there have been many generalizations to different situations in several complex variables. I will talk about Fefferman's field's medal work on Fefferman extension and also the celebrated Ohsawa-Takegoshi L^2 extension theorem which is now a cornerstone for the application of pluripotential theory to complex analytic geometry.<br />
<br />
====Jenny Yeon, 2:00-2:25====<br />
<br />
Title: Application of Slope Field<br />
<br />
Abstract: Overview of historical problems in Dynamical Systems and what CRN(chemical reaction network) group at UW Madison does. In particular, what exactly is the butterfly effect? Why is this simple-to-state problem so hard even if it is only 2D (Hilbert's 16th problem)? What are some modern techniques availble? What do the members of CRN group do? Is the theory of CRN applicable? <br />
<br />
====Rajula Srivastava, 2:30-2:55====<br />
<br />
Title: The World of Wavelets<br />
<br />
Abstract: Why the fourier series might not be the best way to represent functions in all cases, and why wavelets might be a good alternative in some of these.<br />
<br />
====Shengyuan Huang, 3:00-3:25====<br />
<br />
Title: Group objects in various categories<br />
<br />
Abstract: I will introduce categories and talk about group objects in the category of sets and manifolds. The latter leads to the theory of Lie group and Lie algebras. We can then talk about group objects in some other category coming from algebraic geometry and obtain similar results as Lie groups and Lie algebras.<br />
<br />
====Ivan Ongay Valverde, 3:30-3:55====<br />
<br />
Title: Games and Topology<br />
<br />
Abstract: Studying the topology of the real line leads to really interesting questions and facts. One of them is the relation between some kind of infinite games, called topological games, and specific properties of a subsets of reals. In this talk we will study the perfect set game.<br />
<br />
====Sun Woo Park, 4:00-4:25====<br />
<br />
Title: Reconstruction of character tables of Sn<br />
<br />
Abstract: We will discuss how we can relate the columns of the character tables of Sn and the tensor product of irreducible representations over Sn. Using the relation, we will also indicate how we can recover some columns of character tables of Sn. <br />
<br />
====Max Bacharach, 4:30-4:55====<br />
<br />
Title: Clothes, Lice, and Coalescence<br />
<br />
Abstract: A gentle introduction to coalescent theory, motivated by an application which uses lice genetics to estimate when human ancestors first began wearing clothing.<br />
<br />
=== April 3, Yu Feng ===<br />
<br />
Title: Suppression of phase separation by mixing<br />
<br />
Abstract: The Cahn-Hilliard equation is a classical PDE that models phase separation of two components. We add an advection term so that the two components are stirred by a velocity. We show that there exists a class of fluid that can prevent phase separation and enforce the solution converges to its average exponentially.<br />
<br />
=== April 17, Hyun-Jong Kim===<br />
<br />
Title: Musical Harmony for the Mathematician<br />
<br />
Abstract: TBD<br />
<br />
=== April 24, Carrie Chen ===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
== Fall 2019 ==<br />
<br />
=== September 25, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 2, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 9, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 16, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 23, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 30, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 6, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 13, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 20, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== December 4, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== December 12, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=AMS_Student_Chapter_Seminar&diff=17304AMS Student Chapter Seminar2019-04-11T14:20:54Z<p>Nagreen: /* April 17, Hyun-Jong */</p>
<hr />
<div>The AMS Student Chapter Seminar is an informal, graduate student seminar on a wide range of mathematical topics. Pastries (usually donuts) will be provided.<br />
<br />
* '''When:''' Wednesdays, 3:20 PM – 3:50 PM<br />
* '''Where:''' Van Vleck, 9th floor lounge (unless otherwise announced)<br />
* '''Organizers:''' [https://www.math.wisc.edu/~malexis/ Michel Alexis], [https://www.math.wisc.edu/~drwagner/ David Wagner], [http://www.math.wisc.edu/~nicodemus/ Patrick Nicodemus], [http://www.math.wisc.edu/~thaison/ Son Tu]<br />
<br />
Everyone is welcome to give a talk. To sign up, please contact one of the organizers with a title and abstract. Talks are 30 minutes long and should avoid assuming significant mathematical background beyond first-year graduate courses.<br />
<br />
The schedule of talks from past semesters can be found [[AMS Student Chapter Seminar, previous semesters|here]].<br />
<br />
== Spring 2019 ==<br />
<br />
=== February 6, Xiao Shen (in VV B139)===<br />
<br />
Title: Limit Shape in last passage percolation<br />
<br />
Abstract: Imagine the following situation, attached to each point on the integer lattice Z^2 there is an arbitrary amount of donuts. Fix x and y in Z^2, if you get to eat all the donuts along an up-right path between these two points, what would be the maximum amount of donuts you can get? This model is often called last passage percolation, and I will discuss a classical result about its scaling limit: what happens if we zoom out and let the distance between x and y tend to infinity.<br />
<br />
=== February 13, Michel Alexis (in VV B139)===<br />
<br />
Title: An instructive yet useless theorem about random Fourier Series<br />
<br />
Abstract: Consider a Fourier series with random, symmetric, independent coefficients. With what probability is this the Fourier series of a continuous function? An <math>L^{p}</math> function? A surprising result is the Billard theorem, which says such a series results almost surely from an <math>L^{\infty}</math> function if and only if it results almost surely from a continuous function. Although the theorem in of itself is kind of useless in of itself, its proof is instructive in that we will see how, via the principle of reduction, one can usually just pretend all symmetric random variables are just coin flips (Bernoulli trials with outcomes <math>\pm 1</math>).<br />
<br />
=== February 20, Geoff Bentsen ===<br />
<br />
Title: An Analyst Wanders into a Topology Conference<br />
<br />
Abstract: Fourier Restriction is a big open problem in Harmonic Analysis; given a "small" subset <math>E</math> of <math>R^d</math>, can we restrict the Fourier transform of an <math>L^p</math> function to <math>E</math> and retain any information about our original function? This problem has a nice (somewhat) complete solution for smooth manifolds of co-dimension one. I will explore how to start generalizing this result to smooth manifolds of higher co-dimension, and how a topology paper from the 60s about the hairy ball problem came in handy along the way.<br />
<br />
=== February 27, James Hanson ===<br />
<br />
Title: What is...a Topometric Space?<br />
<br />
Abstract: Continuous first-order logic is a generalization of first-order logic that is well suited for the study of structures with a natural metric, such as Banach spaces and probability algebras. Topometric spaces are a simple generalization of topological and metric spaces that arise in the study of continuous first-order logic. I will discuss certain topological issues that show up in topometric spaces coming from continuous logic, as well as some partial solutions and open problems. No knowledge of logic will be required for or gained from attending the talk.<br />
<br />
=== March 6, Working Group to establish an Association of Mathematics Graduate Students ===<br />
<br />
Title: Introducing GRAMS (Graduate Representative Association of Mathematics Students)<br />
<br />
Abstract: Over the past couple months, a handful of us have been working to create the UW Graduate Representative Association of Mathematics Students (GRAMS). This group, about 5-8 students, is intended to be a liaison between the graduate students and faculty, especially in relation to departmental policies and decisions that affect graduate students. We will discuss what we believe GRAMS ought to look like and the steps needed to implement such a vision, then open up the floor to a Q&A. Check out our [http://sites.google.com/wisc.edu/grams/home website] for more information.<br />
<br />
=== March 13, Connor Simpson ===<br />
<br />
Title: Counting faces of polytopes with algebra<br />
<br />
Abstract: A natural question is: with a fixed dimension and number of vertices, what is the largest number of d-dimensional faces that a polytope can have? We will outline a proof of the answer to this question.<br />
<br />
=== March 26 (Prospective Student Visit Day), Multiple Speakers ===<br />
<br />
====Eva Elduque, 11-11:25====<br />
<br />
Title: Will it fold flat?<br />
<br />
Abstract: Picture the traditional origami paper crane. It is a 3D object, but if you don’t make the wings stick out, it is flat. This is the case for many origami designs, ranging from very simple (like a paper hat), to complicated tessellations. Given a crease pattern on a piece of paper, one might wonder if it is possible to fold along the lines of the pattern and end up with a flat object. We’ll discuss necessary and sufficient conditions for a crease pattern with only one vertex to fold flat, and talk about what can be said about crease patterns with multiple vertices.<br />
<br />
====Soumya Sankar, 11:30-11:55====<br />
<br />
Title: An algebro-geometric perspective on integration<br />
<br />
Abstract: Integrals are among the most basic tools we learn in complex analysis and yet are extremely versatile. I will discuss one way in which integrals come up in algebraic geometry and the surprising amount of arithmetic and geometric information this gives us.<br />
<br />
====Chun Gan, 12:00-12:25====<br />
<br />
Title: Extension theorems in complex analysis<br />
<br />
Abstract: Starting from Riemann's extension theorem in one complex variable, there have been many generalizations to different situations in several complex variables. I will talk about Fefferman's field's medal work on Fefferman extension and also the celebrated Ohsawa-Takegoshi L^2 extension theorem which is now a cornerstone for the application of pluripotential theory to complex analytic geometry.<br />
<br />
====Jenny Yeon, 2:00-2:25====<br />
<br />
Title: Application of Slope Field<br />
<br />
Abstract: Overview of historical problems in Dynamical Systems and what CRN(chemical reaction network) group at UW Madison does. In particular, what exactly is the butterfly effect? Why is this simple-to-state problem so hard even if it is only 2D (Hilbert's 16th problem)? What are some modern techniques availble? What do the members of CRN group do? Is the theory of CRN applicable? <br />
<br />
====Rajula Srivastava, 2:30-2:55====<br />
<br />
Title: The World of Wavelets<br />
<br />
Abstract: Why the fourier series might not be the best way to represent functions in all cases, and why wavelets might be a good alternative in some of these.<br />
<br />
====Shengyuan Huang, 3:00-3:25====<br />
<br />
Title: Group objects in various categories<br />
<br />
Abstract: I will introduce categories and talk about group objects in the category of sets and manifolds. The latter leads to the theory of Lie group and Lie algebras. We can then talk about group objects in some other category coming from algebraic geometry and obtain similar results as Lie groups and Lie algebras.<br />
<br />
====Ivan Ongay Valverde, 3:30-3:55====<br />
<br />
Title: Games and Topology<br />
<br />
Abstract: Studying the topology of the real line leads to really interesting questions and facts. One of them is the relation between some kind of infinite games, called topological games, and specific properties of a subsets of reals. In this talk we will study the perfect set game.<br />
<br />
====Sun Woo Park, 4:00-4:25====<br />
<br />
Title: Reconstruction of character tables of Sn<br />
<br />
Abstract: We will discuss how we can relate the columns of the character tables of Sn and the tensor product of irreducible representations over Sn. Using the relation, we will also indicate how we can recover some columns of character tables of Sn. <br />
<br />
====Max Bacharach, 4:30-4:55====<br />
<br />
Title: Clothes, Lice, and Coalescence<br />
<br />
Abstract: A gentle introduction to coalescent theory, motivated by an application which uses lice genetics to estimate when human ancestors first began wearing clothing.<br />
<br />
=== April 3, Yu Feng ===<br />
<br />
Title: Suppression of phase separation by mixing<br />
<br />
Abstract: The Cahn-Hilliard equation is a classical PDE that models phase separation of two components. We add an advection term so that the two components are stirred by a velocity. We show that there exists a class of fluid that can prevent phase separation and enforce the solution converges to its average exponentially.<br />
<br />
=== April 17, Hyun-Jong Kim===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== April 24, Carrie Chen ===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
== Fall 2019 ==<br />
<br />
=== September 25, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 2, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 9, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 16, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 23, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== October 30, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 6, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 13, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== November 20, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== December 4, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD<br />
<br />
=== December 12, TBD===<br />
<br />
Title: TBD<br />
<br />
Abstract: TBD</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Algebra_and_Algebraic_Geometry_Seminar_Spring_2019&diff=17190Algebra and Algebraic Geometry Seminar Spring 20192019-03-22T14:10:53Z<p>Nagreen: /* Spring 2019 Schedule */</p>
<hr />
<div>The seminar meets on Fridays at 2:25 pm in room B235.<br />
<br />
Here is the schedule for [[Algebra and Algebraic Geometry Seminar Fall 2018 | the previous semester]], for [[Algebra and Algebraic Geometry Seminar Fall 2019 | the next semester]], and for [[Algebra and Algebraic Geometry Seminar | this semester]].<br />
<br />
==Algebra and Algebraic Geometry Mailing List==<br />
*Please join the [https://admin.lists.wisc.edu/index.php?p=11&l=ags AGS Mailing List] to hear about upcoming seminars, lunches, and other algebraic geometry events in the department (it is possible you must be on a math department computer to use this link).<br />
<br />
<br />
== Spring 2019 Schedule ==<br />
<br />
{| cellpadding="8"<br />
!align="left" | date<br />
!align="left" | speaker<br />
!align="left" | title<br />
!align="left" | host(s) <br />
|-<br />
|January 25<br />
|[http://www.math.utah.edu/~smolkin/ Daniel Smolkin (Utah)]<br />
|Symbolic Powers in Rings of Positive Characteristic<br />
|Daniel<br />
|-<br />
|February 1<br />
|Juliette Bruce<br />
|Asymptotic Syzgies for Products of Projective Spaces<br />
|Local<br />
|-<br />
|February 8 (B135)<br />
|[http://www.mit.edu/~ivogt/ Isabel Vogt (MIT)]<br />
| Low degree points on curves<br />
|Wanlin and Juliette<br />
|-<br />
|February 15<br />
|Pavlo Pylyavskyy (U. Minn)<br />
|Zamolodchikov periodicity and integrability<br />
|Paul Terwilliger<br />
|-<br />
|February 22<br />
|Michael Brown (Wisconsin)<br />
|Chern-Weil theory for matrix factorizations<br />
|Local<br />
|-<br />
|March 1<br />
|[https://math.berkeley.edu/~ceur/ Chris Eur (UC Berkeley)]<br />
|Chow rings of matroids, ring of matroid quotients, and beyond<br />
|Daniel<br />
|-<br />
|March 8<br />
|[http://homepages.math.uic.edu/~kopper/ Jay Kopper (UIC)]<br />
|Stable restrictions of vector bundles on projective varieties<br />
|Daniel<br />
|-<br />
|March 15<br />
|[http://www.math.wisc.edu/~maxim/Sing19program.html Singularities]<br />
|No regular meeting<br />
|Max<br />
|-<br />
|March 22<br />
|No Meeting<br />
|Spring Break<br />
|TBD<br />
|-<br />
|March 29<br />
|<br />
|TBD<br />
|Daniel<br />
|-<br />
|April 5 (at 11:00 in B329)<br />
|[http://www-personal.umich.edu/~ecanton/ Eric Canton (Michigan)]<br />
|TBD<br />
|Michael<br />
|-<br />
|April 5<br />
|[http://www.math.tamu.edu/~ola/ Alexsandra Sobieska (Texas A&amp;M)]<br />
|TBD<br />
|Daniel<br />
|-<br />
|April 12<br />
|TBD<br />
|TBD<br />
|TBD<br />
|-<br />
|April 19<br />
|[http://www-personal.umich.edu/~grifo/ Elo&iacute;sa Grifo (Michigan)]<br />
|TBD<br />
|TBD<br />
|-<br />
|April 26<br />
|TBD<br />
|TBD<br />
|TBD<br />
|-<br />
|May 3<br />
|TBD<br />
|TBD<br />
|TBD<br />
|}<br />
<br />
== Abstracts ==<br />
<br />
===Daniel Smolkin===<br />
'''Symbolic Powers in Rings of Positive Characteristic'''<br />
<br />
The n-th power of an ideal is easy to compute, though difficult to describe geometrically. In contrast, symbolic powers of ideals are difficult to compute while having a natural geometric description. In this talk, I will describe how to compare ordinary and symbolic powers of ideals using the techniques of positive-characteristic commutative algebra, especially in toric rings and Hibi rings. This is based on joint work with Javier Carvajal-Rojas, Janet Page, and Kevin Tucker. Graduate students are encouraged to attend!<br />
<br />
===Juliette Bruce===<br />
<br />
'''Title: Asymptotic Syzygies for Products of Projective Spaces'''<br />
<br />
I will discuss results describing the asymptotic syzygies of products of projective space, in the vein of the explicit methods of Ein, Erman, and Lazarsfeld’s non-vanishing results on projective space.<br />
<br />
===Isabel Vogt===<br />
<br />
'''Title: Low degree points on curves'''<br />
<br />
In this talk we will discuss an arithmetic analogue of the gonality of a curve over a number field: the smallest positive integer e such that the points of residue degree bounded by e are infinite. By work of Faltings, Harris--Silverman and Abramovich--Harris, it is well-understood when this invariant is 1, 2, or 3; by work of Debarre--Fahlaoui these criteria do not generalize to e at least 4. We will study this invariant using the auxiliary geometry of a surface containing the curve and devote particular attention to scenarios under which we can guarantee that this invariant is actually equal to the gonality . This is joint work with Geoffrey Smith.<br />
<br />
===Pavlo Pylyavskyy===<br />
<br />
'''Zamolodchikov periodicity and integrability'''<br />
<br />
T-systems are certain discrete dynamical systems associated with quivers. They appear in several different contexts: quantum affine algebras and Yangians, commuting transfer matrices of vertex models, character theory of quantum groups, analytic Bethe ansatz, Wronskian-Casoratian duality in ODE, gauge/string theories, etc. Periodicity of certain T-systems was the main conjecture in the area until it was proven by Keller in 2013 using cluster categories. In this work we completely classify periodic T-systems, which turn out to consist of 5 infinite families and 4 exceptional cases, only one of the infinite families being known previously. We then proceed to classify T-systems that exhibit two forms of integrability: linearization and zero algebraic entropy. All three classifications rely on reduction of the problem to study of commuting Cartan matrices, either of finite or affine types. The finite type classification was obtained by Stembridge in his study of Kazhdan-Lusztig theory for dihedral groups, the other two classifications are new. This is joint work with Pavel Galashin. <br />
<br />
===Michael Brown===<br />
<br />
'''Chern-Weil theory for matrix factorizations'''<br />
<br />
This is joint work with Mark Walker. Classical algebraic Chern-Weil theory provides a formula for the Chern character of a projective module P over a commutative ring in terms of a connection on P. In this talk, I will discuss an analogous formula for the Chern character of a matrix factorization. Along the way, I will provide background on matrix factorizations, and also on classical Chern-Weil theory.<br />
<br />
<br />
===Chris Eur===<br />
'''Chow rings of matroids, ring of matroid quotients, and beyond'''<br />
<br />
We introduce a certain nef generating set for the Chow ring of the wonderful compactification of a hyperplane arrangement complement. This presentation yields a monomial basis of the Chow ring that admits a geometric and combinatorial interpretation with several applications. Geometrically, one can recover Poincare duality, compute the volume polynomial, and identify a portion of a polyhedral boundary of the nef cone. Combinatorially, one can generalize Postnikov's result on volumes of generalized permutohedra, prove Mason's conjecture on log-concavity of independent sets for certain matroids, and define a new valuative invariant of a matroid that measures its closeness to uniform matroids. This is an on-going joint work with Connor Simpson and Spencer Backman.<br />
<br />
===Jay Kopper===<br />
'''Stable restrictions of vector bundles on projective varieties'''<br />
<br />
Stable vector bundles---and more generally, stable sheaves---play a role in the classification of algebraic vector bundles analogous to that of simple groups in group theory. Recent developments in this subject have extended the notion of stability to the entire derived category of sheaves. This broader perspective can be used to study the classical moduli space. In this talk I will discuss these ideas in the context of restriction theorems: situations in which a stable vector bundle remains stable when restricted to a subvariety. I will conclude with some applications to higher-rank Brill-Noether theory. This is joint work with S. Feyzbakhsh.<br />
<br />
===Shamgar Gurevich===<br />
<br />
'''Harmonic Analysis on GLn over finite fields, and Random Walks'''<br />
<br />
There are many formulas that express interesting properties of a group G in terms of sums over its characters. For evaluating or estimating these sums, one of the most salient quantities to understand is the {\it character ratio}: <br />
<br />
$$<br />
trace(\rho(g))/dim(\rho),<br />
$$<br />
<br />
for an irreducible representation $\rho$ of G and an element g of G. For example, Diaconis and Shahshahani stated a formula of this type for analyzing G-biinvariant random walks on G. It turns out that, for classical groups G over finite fields (which provide most examples of finite simple groups), there is a natural invariant of representations that provides strong information on the character ratio. We call this invariant {\it rank}. This talk will discuss the notion of rank for GLn over finite fields, and apply the results to random walks. This is joint work with Roger Howe (Yale and Texas AM).</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Graduate_Student_Guide&diff=17172Graduate Student Guide2019-03-15T18:33:41Z<p>Nagreen: /* Contacts and Other Resources */</p>
<hr />
<div>[[Image:Exams.png|400px|right | Grading Exams in the Lounge]]<br />
<br />
<br />
<br />
<br />
<br />
= Food =<br />
<br />
There are many ethnic and interesting restaurants in Madison – Indonesian, African, Italian, Himalayan, Laotian, Peruvian, Mexican, Bakeries, Brew Pubs, Coffee Joints, you name it -- and everyone has their favorites.<br />
<br />
The biggest resource for finding food (and entertainment!) in Madison is probably the [http://www.thedailypage.com/eats/ Daily Page] (the online version of our local paper, the Isthmus), where you can search local restaurants by name, locality, and cuisine. There, they have reviews, hours, contact info, pricing, etc. Be sure to peruse their [http://www.thedailypage.com/mad-tools/madisons-favorites/favorites.php?category=Restaurants Madison's Favorites] section for some quick tips! Of course [http://www.yelp.com/ yelp] is always useful as well. At one point a couple spent a few years trying to sample every restaurant in Madison and blogged about their journey on the [http://www.madisonatoz.com/ Madison A to Z].<br />
<br />
Here are some general food facts:<br />
<br />
== Campus Food ==<br />
*Food Carts: Open for lunch in Library Mall at the foot of Bascom Hill near Lake & State Street. Very good and very cheap, and out as long as it's not too cold.<br />
<br />
*Badger Market at Ingraham Hall: Very close to Van Vleck, and has acceptable coffee (bring your own cup to save money!) and decent snacks. Try the Badger Bundle lunch special: sandwich, drink, and a side for $1 off your total. Halfway down the hill is the [http://www.union.wisc.edu/crossroadscafe.htm Crossroads Cafe] which has much better coffee and is open later.<br />
<br />
*Memorial Union: The Rathskeller has food and next door is Lakeside cafe with much better food. Summer afternoons on the terrace is an excellent place to hang out in the sunshine with a beer and brat.<br />
<br />
*Union South: Features a pizza place, a pan-Asian restaurant, a sandwich shop, a sports bar (burgers and sandwiches) and an ice cream stand. <br />
<br />
*State Street (past the food carts) is full of restaurants and Coffee shops – there are at least a half dozen coffee roasters in town, and each supplies a different set of shops. In particular for lunch, there are the popular chains, such as Potbelly Sandwich Works, Einstein Bros. Bagels, or Chipotle... or hit the more independent spots such as the Sunroom Cafe or Ian's Pizza.<br />
<br />
*Residence Hall Cafeterias are pretty decent here, but filled with undergraduates! Enter at your own risk!<br />
<br />
== MadTown food ==<br />
<br />
Traditional Madison foods are German varieties such as beer, cheese, and bratwurst. Twice a year Madison hosts [http://www.bratfest.com/ Bratfest], a record breaking event. <br />
UW has [http://babcockhalldairystore.wisc.edu/ Babcock Hall Ice Cream] on campus which creates delicious ice cream available in the Unions. The [http://www.chocolateshoppeicecream.com/ Chocolate Shoppe], [http://www.ilovemichaels.com/ Michael's Frozen Custard] and [http://www.culvers.com/ Culvers] have nice deserts.<br />
Micro breweries in town include the [http://www.greatdanepub.com/ Great Dane], [http://www.capital-brewery.com/ Captial Brewery] and [http://www.aleasylum.com/ Ale Asylum]. Nearby there is the famous [http://www.newglarusbrewing.com/ New Glarus Brewing Co] which only sells beer in Wisconsin. You can join a free beer tour or walk through the brewery on a self guided tourn.<br />
<br />
In early September (Labor Day weekend), check out [http://www.tasteofmadison.com/ Taste of Madison] to see many restaurants all in one place at one time.<br />
<br />
Try a good ol' midwestern Fish Fry on Friday night – All you can eat fried fish generally served with a bran muffin, clam chowder, or coleslaw. Most Brew Pubs and some churches have them, and the [http://www.avenuebarmadison.com/ Avenue Club] runs a Friday night Fish Fry.<br />
<br />
== Farm fresh food ==<br />
<br />
The [http://madisonfarmersmarket.com/ Dane County Farmer's Market] is amazing and HUGE. The big one is open every Saturday morning, and is located on the capitol square for most of the year. In addition to the ludicrous amount of fresh produce, there are also bakery stands, coffee, and fresh juice carts for quick breakfasts.<br />
<br />
There are also a few smaller [http://www.reapfoodgroup.org/atlas/farmers_markets.htm#danecounty markets] scattered around town, almost every day of the week:<br />
<br />
*Sunday: 8:30am to 12:30pm in front of Pierce's Northside Market<br />
*Monday: (none)<br />
*Tuesday: 4pm to 7pm on Ingersol at Williamson, 2pm to 6pm at 1602 S. Park St,<br />
*Wednesday: 8am to 2pm on MLKJr Blvd, 7am to 1pm at the Hilldale Shopping Center,<br />
*Thursday: Thursdays, 2pm to 6pm at the Villager Mall on Park St., 2pm to 6pm in the McFarland Centre, 7:30am to 1:30pm in the Greenway Station shopping center,<br />
*Friday: (none)<br />
*Saturday: 6am to 2pm on the Capitol square, 7am to 1pm at the Hilldale Shopping Center, 9am to 2pm at 1602 S. Park St, 7am to 1pm at Sheboygan Ave. and Segoe Rd., and 8:30am to 11am in Watertower Park.<br />
<br />
During the summer and fall, there are many [http://www.reapfoodgroup.org/atlas/index.htm local farms] where you can [http://www.reapfoodgroup.org/atlas/farms/u_pick.htm pick] your own strawberries, raspberries, apples, or pumpkins when they are in season.<br />
<br />
If you're in town for the summer, you might consider signing up for a [http://www.macsac.org/ Community Supported Agriculture] food box. CSA is a way to support a local farm by paying an annual fee in the winter or spring which buys you a share of the season's harvest. Once harvesting begins, members pick-up a weekly box of fresh foods which may include produce, fruits, cheeses, eggs, meats, poultry, flowers, herbs or preserves. The typical CSA season in Wisconsin runs from the end of May through mid-October. You do have to pay the lump sum up-front, and some weeks you'll find yourself with five pounds of chard... but for most of the summer you'll have your produce needs met, and you can feel good about supporting small local farms. Better yet, most of the university's insurance providers offer [http://www.macsac.org/rebates.html rebates] for signing up for a CSA -- somewhere between $50-$300, depending on the plan and how many people you're sharing with (for example, if two people on GHC share a box, they might pay $450 for the box for a box lasting 25 weeks, but they they could each get $100 back, making that $5/week per person). If you're interested, remember to sign up early -- most programs are full by May.<br />
<br />
= Grocery Stores =<br />
<br />
== Generic Groceries ==<br />
<br />
*[http://www.capcentremarket.com/ Capitol Centre Market]: Given their small size, they have an excellent selection of groceries. They tend to be a bit pricey. In addition, they deliver groceries.<br />
<br />
*[http://www.freshmadisonmarket.com/ Fresh Madison Market]: A reasonably large general grocery store, not too expensive. Has a large selection of "typical college items" (lots of frozen foods). Located on University, not too far from Van Vleck. They also deliver groceries.<br />
<br />
*[http://www.copps.com/ Copps]: Your standard grocery store with multiple locations.<br />
<br />
*[http://www.costco.com/Warehouse/LocationTemplate.aspx?Warehouse=1020&lang=en-US Costco]: Your friendly big-box bulk store. They treat their employees incredibly well. Good buys on computers, 2 lbs of sockeye salmon or button down oxford cloth long sleeved shirts. You'll need a membership or go there with someone who has a membership. You can also get a free trial membership if you simply ask.<br />
<br />
*[https://www.hy-vee.com/ Hy-Vee]<br />
<br />
*[http://www.walgreens.com/ Walgreens]: Pharmacy/Grocery store. There is a Walgreens on the corner of Lake & State Street near Van Vleck, on the Capitol Square, at East Campus Mall, and in University square.<br />
<br />
*[http://www.wholefoods.com/stores/madison/ Whole Foods]: Kinda pricey, but good bread, specialty stuff, and produce through the winter.<br />
<br />
*[http://www.woodmans-food.com/ Woodman's]: two locations -- [http://www.google.com/maps?f=q&hl=en&q=725+S+Gammon+Rd+Madison,+WI&ie=UTF8&om=1&ll=43.055217,-89.50304&spn=0.05381,0.171661 East] and [http://www.google.com/maps?f=q&hl=en&q=3817+Milwaukee+St,+Madison,+WI&ie=UTF8&ll=43.103615,-89.319363&spn=0.053768,0.171661&om=1 West]. If you have a car and the time, go here. Very large, very cheap, but time consuming. They don't take credit cards, so bring a debit card or check book. Check out the liquor store for a large selection (you can buy all types of alcohol in grocery stores in Wisconsin... but not after 9pm).<br />
<br />
*[http://www.traderjoes.com/ Trader Joe's]: Located at 1810 Monroe St. They have good prices for select specialty food items such as wine, cheese and fancy snacks. Their basic foodstuffs tend to be a bit pricey.<br />
<br />
*The Jenifer Street Market located on 2038 Jenifer Street is a nice little grocery store if you happen to live in the area.<br />
<br />
== Co-ops ==<br />
Co-ops are a good source of local organic food. If you are a member they provide discounts, but you can also shop there at your own will.<br />
<br />
*[http://www.regentmarketcoop.org/ Regent Market Cooperative], 2136 Regent St. 233-4329.<br />
<br />
*[http://www.willystreet.coop/ Willy Street Co-op] The largest and most active co-op in the Madison area. They have been able to survive the decline in co-ops over the years. They offer a large selection of bulk foods and spices at an excellent price. For a quick bite, they have an excellent deli, salad bar, and in-store coffee shop. 1221 Williamson St. 251-6776. They recently opened a second store in Middleton located at 6825 University Ave. Both locations deliver groceries.<br />
<br />
== Specialty Foods ==<br />
<br />
*[http://www.aldifoods.com/ Aldi Foods]: Very cheap! Little selection.<br />
<br />
*[http://www.google.com/maps?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=keJ&q=asian+midway+foods&near=Madison,+WI&radius=0.0&latlng=43073056,-89401111,304616636444102595&sa=X&oi=local&ct=authority Asian Midway Market]: The go-to market for anything Thai, Chinese or South-East Asian, this centrally-located store comes highly recommended. In particular, they offer a great selection of specialized produce. 301 South Park Street; 255-5864<br />
<br />
*[http://www.brennansmarket.com/ Brennan's Market]: Great for Produce, Meats, Cheese, Micro brews and Wines. You won't find things like Flour and Saran Wrap here, but definitely worth the trip.<br />
<br />
*[http://www.reapfoodgroup.org/atlas/ Farm Fresh Atlas]: Not a grocery store, but a good resource for where you can buy local foods and a list of farms in the areas.<br />
<br />
*[http://www.madseafood.com/ The Seafood Center]: The name says it all. Great fresh fish and live lobsters.<br />
<br />
*[http://frabonisdeli.com/ Fraboni's]: An awesome Italian grocery store and deli. They have very good [http://frabonisdeli.com/oils olive oils], [http://frabonisdeli.com/pastas pastas], and make-your-own pizza fixings.<br />
<br />
*[http://www.insiderpages.com/b/3723579948/garden-asian-market-middleton Garden Asian Market]: A full service Asian food market specializing in fresh meat, produce, and seafood. Mostly Chinese-leaning, they do a good job of providing a wide variety of items within their niche. It may be far out, but it's worth the trip in its pleasantness and selection.<br />
<br />
*[http://maps.google.com/maps?client=safari&oe=UTF-8&ie=UTF8&q=india+house+grocery+store,+madison,+wi&fb=1&gl=us&hq=india+house+grocery+store,&hnear=Madison,+WI&cid=0,0,8495347478199843118&ll=43.050466,-89.503019&spn=0.007871,0.019183&t=h&z=16&iwloc=A India House]: Really well done Indian grocery store. Good place to buy Kari leaves.<br />
<br />
*[http://www.google.com/maps?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=TMe&q=lee%27s+oriental&near=Madison,+WI&radius=0.0&latlng=43073056,-89401111,92533124768468793&sa=X&oi=local&ct=authority Lee's Oriental]: Next to Penzey's spices. 3240 University Ave; 231-1593<br />
<br />
*[http://www.google.com/maps?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=2Me&q=oriental+shop&near=Madison,+WI&radius=0.0&latlng=43073056,-89401111,13628497956998458364&sa=X&oi=local&ct=authority Oriental Shop]: They carry mostly dry-goods, and tend to lean toward stocking more Korean items. 1206 South Park Street; 255-0326<br />
<br />
= Housing =<br />
<br />
Haven't found a place yet? Already hate your apartment?<br />
<br />
* [https://campusareahousing.wisc.edu/ UW Off-Campus Housing Search]: Probably the best search site for students.<br />
<br />
* Again, [http://madison.craigslist.org/ Craig's List] is a good resourse. Also a good place to look for roommates outside of the department.<br />
<br />
* [https://www.housing.wisc.edu/apartments/ University Apartments]: On campus graduate housing, particularly popular with married couples (especially with children). Singles are also welcome. Many of them are on the bus route #80, a free route which runs from the apartments through campus every ten minutes throughout the day.<br />
<br />
== Location, Location, Location ==<br />
<br />
If you would like to keep your commute down, there are many places near campus. Many graduate students prefer to live close enough to Van Vleck to be within walking distance, yet far enough away to stay away from partying undergraduate students.<br />
<br />
Many graduate students live in the Vilas neighborhood, which is located South of Regent Street and between Park and Monroe. East of the Capitol building, we also have the Willy St. neighborhood (between Williamson and Rutledge streets, between Paterson and Thornton) and the other side of the Isthmus, between Mifflin and Lake Mendota. The university offers on campus housing at Eagle Heights with regular buses. Many students also live near Sheboygan and University Avenues (not on this map), and there are regular buses that run up University Avenue that will drop you off right in front of Van Vleck. The large apartment complexes in that area include the Normandy, Chapel Hill, Carolina, Monticello, Hilldale Towers, Park Towers, and Sovereign Apartments which are cheaper to live in than spots on the square.<br />
<br />
Because there is no parking on campus, you will need to plan on living within walking distance of a bus route or campus itself. You will receive a free bus pass for the [http://www.cityofmadison.com/metro/ Madison Metro] system, which is very reliable. Check out the “plan your trip” link to find bus routes near you.<br />
<br />
Here is an approximate map of many areas where you will be likely to find housing: <br />
[[Image:gradhousingmap.jpg|400px| center | Housing Map]]<br />
<br />
Basically, shoot for zones 2-6, the North parts of zones 7 and 8, or the far East part of zone 10 on [http://housing.civc.wisc.edu/map_all.asp this map] (the map from the UW Off-Campus Housing Search).<br />
<br />
== Stuff your landlord might not tell you ==<br />
<br />
*Utilities:<br />
Lots of apartments have water, sewage, heat, and and sometimes electricity included in rent. For those which don't, be sure to find out what to expect through the [http://mge.com/myaccount/averagecost/ Madison Gas and Electric] web page. Just tell them the address of the place you're looking at, and they'll tell you what the highs, lows, and averages have been over the last year.<br />
<br />
*Property information:<br />
The [http://www.cityofmadison.com/assessor/property.html City Assessor] has all of the basic information about Madison properties on file, including how many units are on the property, how much square footage there is, if there's AC in the building, what school district it's in, who your alderperson would be, and what else is on the property (e.g. garages). They'll even tell you how much the property is worth, and how much your landlord is paying in property taxes. Sometimes the square footage isn't broken up--for example, maybe there are two units on the first floor, but they'll only tell you that there are 1,700 sq ft on that floor, not how it's split up between the two units. It can be a useful site for rounding out your knowledge of places you're considering renting.<br />
<br />
*Tenants rights:<br />
The [http://www.tenantresourcecenter.org/ Tenant resource center] is a small non-profit membership organization which provides housing counseling, mediation services and office assistance. Their website includes tips for new renters, generic rental forms, and advice for what to do if your landlord just won't get back to you about repairs, returning deposits, etc.<br />
There is also the Student tenant union, which is specifically targeted to UW students.<br />
<br />
== Rental Companies ==<br />
Many properties in Madison are run by rental companies -- some large, some small -- some good, some not-so-good. Larger companies tend to have lower prices, and more people working toward maintaining rentals. However, they may have less of an investment in taking care of each individual property or screening their tenants. Some people feel better renting from small companies, or landlords with only one or two houses. You may get more individual attention and care. Individuals have more investment in protecting each property, and renting to good tenants, so the properties tend to be in more reliable condition. However, with fewer properties comes fewer resources and higher prices.<br />
<br />
Whatever choice you make, be sure to have a conversation with your potential landlords about their polices, especially if you aren't going to be able to see things in person. It may also be good to Google the company or person to see if other people have had something good or bad to say about them or their properties. In particular, [http://www.apartmentratings.com/rate/WI-Madison.html ApartmentRatings.com] has a few of the apartment complexes around town listed.<br />
<br />
Here are some general impressions/very subjective opinions that some of us have gotten from/about a few of the larger local companies:<br />
<br />
*AB Holdings: In particular, they have a couple small apartment buildings on Vilas that are particularly ideal for two people. Quite a few people from the department have rented these units and have been pretty happy.<br />
<br />
*[http://apexrents.com/ Apex Property Management]: Great company. Well-maintained properties, with many of the more recently remodeled rentals being very nice. Their representatives are helpful and responsible, and their tenants seem to be generally satisfied.<br />
<br />
*[http://www.centralmadison.com/ The Christensen Company]: Not terribly up-to-date apartments, but worth taking a look at.<br />
<br />
*[http://www.madisonproperty.com/ Madison Property Management]: Lots of choices, but notoriously junky properties. They tend to cater mostly to undergraduates, and their rentals show it. We wouldn't recommend renting from this company unless you visit first.<br />
<br />
*[http://www.mcbridecompanies.com/ The McBride Companies]: Nice properties, good management. Really good website if you turn the sound off.<br />
<br />
*[http://www.tallardapartments.com/ Tallard Apartments]: Nice properties with very friendly and responsive staff. Their rentals tend to go early in the season.<br />
<br />
*[http://www.wimci.com/ Wisconsin Management Company]: Nice enough properties, but kind of flakey representation. Make sure to ask lots of questions.<br />
<br />
*The Wright Company (or Norris Ct. Apartments): Very nice older buildings, but kind of sketchy management. Nothing is going to be in stellar shape, but they do tend to rent more to graduates and professionals, so they aren't beat up either. If you do rent from them, don't expect them to be very responsive, and be sure to be especially careful about protecting your security deposit by taking photos and keeping a record of your move-in report.<br />
<br />
= Transportation =<br />
<br />
*[http://www.cityofmadison.com/get-around Get Around City of Madison]<br />
<br />
*[http://www.cityofmadison.com/bikeMadison/ Bike Madison] City of Madison Bike Map, Plan Your Ride, and more.<br />
<br />
*[https://madison.bcycle.com/ Madison B-cycle] City's bike sharing system<br />
<br />
*[https://kb.wisc.edu/vip/page.php?id=10954 Bicycles to Rent or Buy] <br />
<br />
*[http://www.cityofmadison.com/metro/ Madison Metro] Madison bus service. Students get a yearly bus pass as part of their segregated fees. Bus routes and schedules and Google Transit Planner.<br />
<br />
*[https://www.zipcar.com/universities/university-of-wisconsin-madison/ ZipCar] is a Madison-based carsharing company that rents cars by the hour to individuals and organizations. Members share access to a fleet of gas efficient vehicles located in reserved parking spaces throughout the city.<br />
<br />
= Furniture =<br />
<br />
*[http://www.svdpmadison.org/ St. Vincent DePaul's]: Like Goodwill. Has cheap dressers, desks, chairs, and general household stuff. Will deliver for a small charge. This is also a great place to donate any furniture or other items that you no longer want – they will pick up the items from your apartment. There is also a Goodwill in town, but they won't have nearly the same volume of furniture.<br />
<br />
*[http://madison.craigslist.org/ Craig's List]: a free online classifieds site. Great not only for furniture, but also pet resources and last minute apartment hunting.<br />
<br />
*Eagle Heights Apartment Bulletin Boards: Lots of cheap stuff from people graduating, many of whom are moving overseas. You can even find cars. You can try posting your own wanted posters on the boards. You can find these boards at the bus stops for the (free) bus 80 route.<br />
<br />
*[http://groups.yahoo.com/group/madisonfreecycle/ Freecycle]: A community "give stuff away for free" website with a Madison branch.<br />
<br />
*Hippie Christmas ("Move-Out Day"): For some reason or another, the evening of August 14th is when the bulk of leases near campus turn over. This is a fantastic day to pick up free furniture from the street. If you already have a rental van, why not help municipal waste by pickup up a bookshelf for them?<br />
<br />
*The Todd Drive Area: Just west of park street on the beltline. Home Concepts for cheap but nice looking furniture, and Steinhafel's for furniture and mattresses.<br />
<br />
*[http://www.bussvc.wisc.edu/swap/swap.html SWAP]. The UW's surplus supply store.<br />
<br />
*Goodwill, multiple locations all over the city.<br />
<br />
= International Student Resources =<br />
Here are a few links specifically for international students. There are international grocery stores listed in the [http://www.math.wisc.edu/wiki/index.php/Graduate_Student_Guide#Specialty_Foods groceries] section.<br />
<br />
*[http://www.uwcssa.net/ Chinese Student & Scholar Association]: A connection to the university's Chinese community for incoming students. They offer rides from the airport, list general information about madison, and organize get-tegethers/Chinese celebrations. International Conversation & Coffee Hour: meet other international students and americans interested in other cultures. Every Friday, 12-2pm, Cooper Hearth Room 160, Union South.<br />
<br />
*[http://iss.wisc.edu/ International Student Services]: the UW's International Student Services<br />
<br />
*[http://india.rso.wisc.edu/ IGSA]: Indian Graduate Student Association.<br />
<br />
*[http://groups.yahoo.com/group/MADindians/ MadIndians]: a Yahoo online group for students from India in Madison. Good place to search for an Indian roommate.<br />
<br />
*[http://mtsa.rso.wisc.edu/ Madison Association of Turkish Students]: Very helpful for incoming Turkish students. It includes information about how best to get to Madison from Turkey, information about housing, and how to reach other Turkish students in Madison.<br />
<br />
= Newspapers =<br />
*[http://www.madison.com/captimes/ The Capitol Times]: Standard local newspaper, printed daily in the afternoon. Of the two standards, this one tends to be the more liberal.<br />
<br />
*[http://www.thedailypage.com/ The Isthmus]: Free independent Madison newspaper. Has a liberal voice and is full of entertainment, including family fun, outdoor attractions, and fine arts. Also puts out the Annual Manual - the yearly guide to all things Madison.<br />
<br />
*[http://www.theonion.com/ The Onion]: While hilarious, this paper is only really good if you're already in on the joke. We get free paper copies in Madison. There is a stack near the elevators in VV. The local edition has local entertainment listings.<br />
<br />
*[http://www.madison.com/wsj/ Wisconsin State Journal]: Standard local newspaper, printed daily in the mornings. Of the two standards, this one tends to be the more conservative.<br />
<br />
= Religious Groups =<br />
*[http://www.atheistalliance.org/aaw/ Atheists and Agnostics of Wisconsin]<br />
<br />
*[http://www.blackhawkchurch.org/ Blackhawk Evangelical Free Church]: Near Sheboygan Ave. at 110 N Whitney Way. A huge church, but with opportunities to get involved and meet people. It has services in the sanctuary, with a mixture of traditional and semi-modern worship, and also "video cafe" services with more lively, modern worship. Very good teaching.<br />
<br />
*[http://www.cpcmadison.com/ Christ Presbyterian Church]. Just east of James Madison Park on Gorham. Has a great choir and organist!<br />
<br />
*[http://www.fusmadison.org/ The First Unitarian Society of Madison]. "A liberal religious community that encourages individual spiritual growth and community action in an atmosphere of warmth, freedom of belief, intellectual curiosity, and open dialogue." Looking for something new? They're open to all types. Also, they are housed in a historic Frank Lloyd Wright building.<br />
<br />
*[http://www.folmadison.org/ Fountain of Life]: 1717 Fish Hatchery Rd. A multi-ethnic church with a lot of eclectic music styles, including a lot of Gospel music<br />
<br />
*[http://genevacc.org/ The Geneva Campus Church]: On Campus Reformed church. They describe themselves as "a university church for the whole family"<br />
<br />
*[http://www.uwhillel.org/ Hillel]: UW-Madison's on-campus center for everything Jewish: religious, cultural, political, traditional, and alternative. Located on Langdon Street, it serves both the school population and, to a far lesser extent, the entire city.<br />
<br />
*[http://islamiccentermadison.org/ Islamic Center of Madison]: Has a masjid inside. 21 N Orchard St, (608)251-9851<br />
<br />
*[http://ivgcf.rso.wisc.edu/ InterVarsity Grad Christian Fellowship]: It's a welcoming place for Christians and non-Christians alike. (You might even find your future husband/wife there) They also have a website with info about local churches. There is a new student picnic at the beginning of the fall semester.<br />
<br />
*Latter Day Saints: There are a number of Church of Jesus Christ of Latter-day Saints wards in the Madison area. The Madison First Ward covers areas closest to campus and meets at 4505 Regent Street, two blocks south of Hilldale Mall, at 9am. The University Ward serves single adults and meets at 1711 University Avenue at 10 am. The Madison Third Ward serves areas close to campus and meets at 701 Bear Claw Way on Madison's far west side at 11 am. Visitors and the curious are always welcome.<br />
<br />
*[http://www.lccmadison.com/ Lutheran Campus Center]: A fairly young, enthusiastic, and liberal-minded congragation, found right on campus.<br />
<br />
*[http://madcitychurch.org/ Mad City Church]: A non-denominational, casual christian fellowship. Services are held in the LaFollette High School located on Madison's east side - very near the corner of Pflaum Rd. and Monona Dr. Office at 2713 E. Washington Ave.<br />
<br />
*[http://www.muuyacm.org/ Madison UU Young Adult and Campus Ministry (MUUYACM)]. One of the largest and most active Unitarian Universalist young adult groups in the U.S., they are open to young adults (ages 18-35) of all denominations. In addition to worships, they organize social-justice-oriented activities, and are an active member of the Wisconsin Network for Peace and Justice.<br />
<br />
*[http://www.uwcatholic.org/ St. Paul's University Catholic Center]: On campus in Library Mall near Lake & State. Has a lively Catholic grad student group called Mustard Seed with Bible studies, Thursday night speakers, retreats, service projects, and large quantities of food and euchre.<br />
<br />
*[http://www.unityofmadison.org/ Unity of Madison]: (from their site) "Unity of Madison is a heart-centered Spiritual Community focused on Truth Seeking and Spiritual Growth through the Christ Consciousness of Acceptance, Love, Peace and Joy. Our purpose is to inspire, nuture, and empower all people in their spiritual growth. We provide creative worship, joyful gathering and educational programs as we teach and live Jesus' message that 'the kingdom of God is within you.'"<br />
<br />
*[http://www.isthmuszencommunity.org/ Zen Buddhism]: A local zen buddhist center is located next to Willy st co-op. New comers are especially welcome.<br />
<br />
= Arts and Entertainment =<br />
<br />
Madison is a medium sized city with a not so medium sized arts and entertainment scene. There are cultural events on campus<br />
and at the [http://www.overturcenter.com Overture Center]; sporting events; art, science, natural history, and history museums; parks, the<br />
[http://www.uwarboretum.org arboretum], and [http://www.olbrich.org botanical gardens]; a free [http://www.vilaszoo.org zoo]; hiking, biking, and cross-country skiing; a [http://www.madfarmmkt.com Farmer’s Market] on the<br />
Capital Square every Saturday morning from April-October; and lots of other things. The [http://www.thedailypage.com Isthmus], is the local free newspaper which posts many current events.<br />
The Isthmus can be found in many stores, in campus buildings, and on street corners.<br />
<br />
== Athletic Activities ==<br />
* [http://www.recsports.wisc.edu/ Rec Sports] runs the gyms on campus. There are three such on-campus gyms -- The SERF, the Nat, and the Shell, which are free with student ID. For $25/semester, you can attend any of their Group Fitness classes, which cover everything from aerobics and weights to yoga and dance. Also, both the SERF and Nat have indoor pools.<br />
<br />
*The University of Wisconsin has a long standing heritage of being proud of their [http://www.uwbadgers.com/ athletic events]. Men's basketball, football and ice-hockey receive the most attention and as a student, you can obtain season tickets for all of these events.<br />
<br />
* [http://www.mufa.org MUFA] is an ultimate frisbee league that has summer as well as spring and fall seasons. This is a really fun way to stay active and meet some new Madison friends! You don't need to form a team-- just see the link for info about how to join a team looking for more players. Note: the games are often played all over the city and burbs, and are not necessarily reachable by bus. You'll need a car, or a teammate with a car. Also see the link for info about local pick-up games.<br />
<br />
== Dancing ==<br />
<br />
*Ballroom: [http://www.uwmbda.org/ UWMBDA] is the big ballroom dance group here. They have dances with lessons every week on Friday or Saturday and a practice group every Thursday.<br />
<br />
*[http://sprott.physics.wisc.edu/dances.htm Contra Dance]: Meetings every Tuesday.<br />
<br />
*International Folk club: meets biweekly Library Mall, Wed/Sun 7:30PM-late.<br />
<br />
*Swing: [http://www.uwswing.com/ Jumptown Swing] is UW's swing club. They host (mostly) weekly dances at Union South, and provide lessons for a nominal fee. See their site for scheduling and links to other swing orgonizations. Also, on Wednesdays, there's dancing at the [http://www.thebrinklounge.com/ Brink Lounge] from 8-11.<br />
<br />
*Salsa: Venues include [http://www.cardinalbar.com/ Cardinal Bar] on Thursdays, [http://www.thedailypage.com/theguide/details.php?event=176610 Frida's] on Friday nights. Don't know how to Salsa? There are lessons before dances at Cardinal, and instruction is offered through the Union's minicourses.<br />
<br />
*Tango: the [http://www.madisontango.org/ Madison Tango Society] provides lessons and dances for Argentine Tango. Their site has a good list or other events in and around Madison.<br />
<br />
== Libraries ==<br />
In addition to the many [http://www.library.wisc.edu/ Libraries of UW], the [http://www.madisonpubliclibrary.org/ Madison Public Library] is a great place for books, movies, and music.<br />
<br />
== Movies ==<br />
The Daily Page has a [http://www.thedailypage.com/movies/listing.php listing] of movie times for most of the theaters around town (both big and small):<br />
<br />
*[http://marcustheatres.com/Theatre/TheatreDetail/140/ Eastgate Cinema], [http://marcustheatres.com/Theatre/TheatreDetail/141/ Point Cinema] and [https://www.amctheatres.com/movie-theatres/amc-star-fitchburg-18 AMC (Star) Cinema] are the three larger movie theaters in town.<br />
<br />
*[http://www.silvercinemasinc.com/scshowtimes.aspx Market Square] shows second runs at a good discount. <br />
<br />
*The [http://www.orpheumtheatre.net/ Orpheum] is an old cinema within site of the capitol on State street. They tend to show less mainstream movies.<br />
<br />
*[http://www.sundancecinemas.com/madison.html Sundance 608] shows independent film as well as blockbuster movies. They have a rooftop cafe that's open during the summer months, 2 bars (you can take a drink into your movie), and a restaurant!<br />
<br />
For on-campus movies:<br />
*The Wisconsin Union Directorate runs on campus screening of films. Their film site can be found [http://www.union.wisc.edu/WUD/film.aspx here.]<br />
<br />
*The UW film department hosts free screenings of a wide array of films based on a given theme for that semester through their [http://cinema.wisc.edu/ cinematheque.] Their department has many contacts with other film institutes and are able show rare original 35mm films that you can't see anywhere else.<br />
<br />
*In late March/early April, go check out some of the many many films showing at the [http://www.wifilmfest.org/ Wisconsin Film Festival.] Sites all over town take part in hosting the showing of these films.<br />
<br />
Madison also has a number of independent video stores:<br />
<br />
*[http://www.fourstarvideoheaven.com/ Four Star Video Heaven] has been voted as a Madison Favorite for a number of years. See their site to browse their collection online.<br />
<br />
== Music ==<br />
Whether you're looking to play music, or just go watch free or (in)expensive concerts, there are many options in Madison.<br />
<br />
*Our very own [http://music.wisc.edu/ Music Department] hosts many music events. Their website has a calendar listing current music events including faculty concerts and student recitals.<br />
<br />
*At Memorial Union, there are events hosted by the [https://union.wisc.edu/get-involved/wud/music/ Wisconsin Union Directorate Music Committee] and the [https://union.wisc.edu/events-and-activities/event-calendar/event/behind-the-beat-jazz-series/2015-11-06 Behind the Beat Jazz Series].<br />
<br />
*[http://www.madisonsymphony.org/ The Madison Symphony Orchestra] (MSO) is the professional symphony based here in Madison. With your student ID, you can get student rush tickets for as little as $10 per person.<br />
<br />
*[http://www.wcoconcerts.org/ The Wisconsin Chamber Orchestra] is Madison's professional chamber orchestra. Each summer, their widely popular [http://www.wcoconcerts.org/new/cos/concertsonthesquare.php concerts on the square] draw many people from all over the place for a free outdoor concert.<br />
<br />
*[http://madisoncommunityorchestra.org/ The Madison Community Orchestra] (MCO) is an informal group run by Madison Area Technical College that meets once a week. There are four free concerts a year and no auditions to play with the group.<br />
<br />
*[http://www.middletoncommunityorchestra.org/ The Middleton Community Orchestra] is a second newly formed community orchestra run by community musicians. Their concerts are extremely affordable, and they may run auditions.<br />
<br />
*[http://www.madisonopera.org/ The Madison Opera] produces three operas annually in addition to Opera in the Park.<br />
<br />
*Outdoor concerts are listed at [http://host.madison.com/travel/local/celebrate-summer-with-madison-area-outdoor-concerts/article_e8b79ce9-34b5-5b82-abda-5c1d00939c36.html madison.com].<br />
<br />
*Other events include [http://visitdowntownmadison.com/events/index.php?category_id=5392 Lunchtime Live], [http://www.wil-mar.org/lafete/ La Fete de Marquette], [https://artsinstitute.wisc.edu/memf/ Madison Early Music Festival], [http://sugarmaplefest.org/ Sugar Maple Traditional Music Festival], and [http://summerfest.com/ Summerfest].<br />
<br />
== Outdoor Activites ==<br />
Madison is a very bicycle friendly town, and there are many parks either in town or within a short drive. Here are some suggestions about outdoor activities to engage in:<br />
<br />
*Take a nice long walk along one of the many paths around [http://lakeshorepreserve.wisc.edu/imap/LakeshoreNaturePreserve.html Picnic Point]... bike the path from Memorial Union out to the tip, or bus/drive out to the base of picnic point and wander the foot trails in the area.<br />
<br />
*Head towards Monona Terrace on Lake Monona, and take one of the paths that wraps around the lake (great bike ride!).<br />
<br />
*You can also go walking and/or biking around the [http://uwarboretum.org/ Arboretum] south of campus and tour their gardens, or head to the free [http://www.vilaszoo.org/ Vilas Zoo]. Lake Wingra is essentially totally surrounded by wooded areas including Henry Vilas Park, the UW-arboretum and Edgewood college. You can rent canoes at Knickerbocker for fairly cheap and relax on Lake Wingra.<br />
<br />
*Community Gardens: There are a number of community gardens run by the [http://www.cacscw.org/gardens/ Community Action Coalition]. Nominally, you can sign up for a plot for a small fee, and learn how to garden if you don't already know, or go to town if you already do. The [http://www.eagleheightsgardens.org/ Eagle Heights Community Garden] is open to both residents and non-residents alike. All of the gardens are fun to look at if you haven't ever seen one.<br />
<br />
*[http://www.olbrich.org/ The Olbrich Botanical Gardens] are located east of lake Monona. Stroll through 16 acres of outdoor display gardens including their award-winning Rose Garden and Thai Pavilion and Garden, or enjoy the year-round tropical Conservatory, a glass pyramid filled with exotic plants, bright flowers, a rushing waterfall, fragrant orchids and free-flying birds.. Outdoor gardens are open daily and free to the public, while entrance to the conservatory is $1 per person.<br />
<br />
*Catch a festival; Madison is home to a number of festivals -- big festivals, small festivals, arts festivals, music festivals, film festivals, beer festivals -- we've got all kinds.<br />
<br />
The Winter opens itself up to new activities such as cross country skiing, ice fishing, snow shoeing and other options. The hoofers club runs ice boats on the lake.<br />
<br />
*The city of Madison parks open up outdoor [http://www.ci.madison.wi.us/parks/winterAct2.html ice skating] at Tenney, Vilas, and Elver parks. No skates? No worries. They will rent skates to you there ($6.00 for the first hour, $2/hr after that).<br />
<br />
*There is also [http://www.ci.madison.wi.us/parks/winterAct4.html cross-country skiing] at a number of Dane county parks, with passes starting at $5/day. No skills? Check out lessons at the [http://www.madnorski.org/page/ Madison Nordic Ski Club] or, again, [http://sns.hoofers.org/ Hoofers] has lots to offer in that area.<br />
<br />
== Student Clubs ==<br />
The University of Wisconsin, being a rather large institution, has got so much stuff going on for all of us student-types. Here are some ways people around the department have been taking advantage:<br />
<br />
* [http://www.union.wisc.edu/craftshop/ Craftshop]: Located upstairs in the Memorial Union, they are "here to satisfy your creative urges in a variety of craft media." Their facilities include a darkroom, a woodshop, a ceramics studio, metal working tools, etc. Friday afternoons, they open their studios to all union members (that means you!) for free!<br />
<br />
* [http://www.hoofers.org/ Hoofers]: Student outdoor recreation club. The Outing and Sailing clubs in particular have lots of graduate students.<br />
<br />
* [http://india.rso.wisc.edu/ IGSA]: Indian Graduate Student Association.<br />
<br />
* [http://www.grad.wisc.edu/education/gsc/index.html GSC]: Graduate Student Collaborative Organization<br />
<br />
* [http://cfli.wisc.edu/student_organizations.htm Student Organizations]: at UW Madison (this is a directory of all registered student organizations at the university; you can search by topic or name)<br />
<br />
== The Student Unions ==<br />
The Memorial Union is located on the lakefront, on Park and Langdon. Be sure to check out the Terrace while the weather is still good -- it's a great place to go to get out of the office, grab something to snack on, and study out in the sun. You'll find the Daily Scoop (yummy ice cream!) and Der Rathskeller (beer and deep-fried goodness). You'll also find all sorts of stuff to keep you busy, like the [http://www.union.wisc.edu/craftshop/ Craftshop], the Union Theater, the Hoofers' headquarters, and a wide array of Mini Courses with which to expand your horizons.<br />
<br />
Also useful: the travel services center and STA Travel will get you good deals on trips (including bus tickets to O'Hare, Midway, and Milwaukee airports), and the theater's box office will get you good deals on shows (theater, music, etc) all around town. In addition, the Union has always got other special events going on to keep all of us entertained -- see their complete [http://www.union.wisc.edu/activities/ list of activities].<br />
<br />
The Union South was recently completely renovated and also has many activities available. They have a climbing wall, a bowling alley, pool tables, a beer garden, a wine tasting room, a ballroom, a movie theater and many other things.<br />
<br />
= Van Vleck Miscellany =<br />
Here's a bit more info about the happenings in and around the Math Dept.<br />
<br />
== Getting money ==<br />
*Paychecks: The first paycheck of the year arrives in October, though you may request an advance on about 30% of your first paycheck when you arrive. If you are not working over the summer, the last will come in June, so be sure to plan for the three month gap.<br />
<br />
*Fees: You will be charged for segregated fees in both semesters, and are not covered in your tuition. The amount depends on your credit load and status, but will be about $500 for most people and due about the time of your first paycheck. If you are on fellowship, this will be taken care of for you, and shouldn't appear on your bill.<br />
<br />
*TA union: The teaching assistants of Wisconsin are unionized. Even if you are not a TA, but are an employee of the department, you're still connected to them through advocacy and campus issues. For more information check out the [http://www.taa-madison.org/ TAA].<br />
<br />
== Getting stuff done ==<br />
See the Contacts section for a list of people who will help you get stuff done.<br />
<br />
If you want to reserve rooms in Van Vleck for review sessions or meetings you can fill out a green form with Sharon Paulson on the second floor. Sharon does the scheduling for about 4 or 5 rooms in the building, so you can also ask her about these rooms directly. If you need to reserve the 9th floor lounge, talk to Michael Wang (also second floor).<br />
<br />
Each grad receives 200 photocopies and 250 black and white print outs a month for personal math use. If you are a TA, Sharon in the Copy Center on the second floor can photocopy materials for classes (which does not count toward your quota)– such as worksheets and quizzes. Just give her at least 24 hours notice. To check your printout quota, open a terminal logged into the math server, and type "pages". If you do go over your quota, you will simply get a (probably very small) bill at the end of the month.<br />
<br />
We get free office supplies on the 2nd floor – just ask the Receptionist for pens, folders, etc.<br />
<br />
You can pick up and send out your mail from the second floor. You might even want to have packages delivered to the department, to avoid missing them being delivered at home (UPS, for example, won't drop off to apartment complexes if you aren't there, so you'll have to drive out to Middleton to pick up your packages).<br />
<br />
It's never too early to start studying for [http://www.math.wisc.edu/graduate/quals quals]... early and often, my friends. Early and Often.<br />
<br />
== Getting together ==<br />
Historically, some afternoons and Friday before colloquium, we have a cookie and coffee social hour on the 9th floor lounge. Keep your eyes open for announcements.<br />
<br />
Definitely check out some of the [http://www.math.wisc.edu/seminars colloquia and seminars]. The earlier you get involved the better. This is a great way to learn more about potential research areas, meet other people in the areas, and meet other mathematicians in other departments. There is a list posted on the 9th floor each week in addition to online.<br />
<br />
Once a semester, our group for [http://www.math.wisc.edu/~wimaw/ women in mathematics] get together for an informal potluck. We also have been known to bring in women speakers funded by the [http://wiseli.engr.wisc.edu/ WiSELI] grant.<br />
<br />
= Miscellaneous Wisconsin Stuff =<br />
This section describes miscellaneous Wisconsin stuff that doesn't belong in any other section, such as, a [[Wisconsin Dictionary]] for those who aren't familiar with the Wisconsin vernacular.<br />
<br />
== Voting ==<br />
Frequently asked questions for Wisconsin voting can be found <br />
[http://wisconsin.gov/state/core/faq_wisconsin_voting_elections.html here]. <br />
As of the April election, Wisconsin has a law that allows for same day registration at the polls:<br />
<br />
''If you wish to register to vote at your polling place, you must complete a voter registration application (EB-131), provide your driver's license number (or if you have not been issued a driver's license, provide a state-issued identification card number or provide the last four (4) digits of your social security number), AND have proof of residence indicating that you have lived at your current address for 10 days preceding the election.''<br />
<br />
Out of state licenses work, and utility bills, bank statements, or pay checks with your name and address on them work for proof of residence.<br />
<br />
== Car Stuff ==<br />
Madison has a DMV out on the west side, just past Midvale, at 4802 Sheboygan Ave, and one on the east side out near the airport. <br />
<br />
*Licenses: As they say on their page for licensing new residents, if you're looking to put your permanent residence here and vote here and generally show up on the radar, you should apply for your [http://www.dot.state.wi.us/drivers/drivers/apply/nonreside/index.htm WI license] within 60 days of establishing residency. Your first baseline license costs $28, and is valid for three years. Note: you will need to take with you, among other things, something like a rent agreement, or a utility bill, UW transcript, or bank statement actually mailed to your WI address (no e-bills). We'll note that math students have been known to wait longer than 60 days to officially apply for residency, but we recommend you don't wait until an out-of-state license expires to get a WI license.<br />
<br />
*Vehicle Registration: If you own a car and officially become a WI resident, you need to get WI plates. All the information you need is available [http://www.dot.state.wi.us/drivers/vehicles/new/resident.htm here].<br />
<br />
*Parking: First, unless you have a motorcycle, '''don't''' plan to park on campus regularly. For parking near your residence, there are some options. Depending on the neighborhood, it's possible to rent a place that has parking included or available for an extra charge. Additionally, if you live in an area surrounded by 2-hr parking [http://www.cityofmadison.com/parkingutility/documents/RP3allmap.pdf zones], you can usually buy a permit (for a little over $20 per year) allowing you to park on the street all day near your home. More information can be found on the City of Madison Parking Utility [http://www.cityofmadison.com/parkingUtility/index.cfm page]. Most importantly, "the vehicle for which you are requesting a permit must be owned by you, your child, your parents/step parents, legal guardian, spouse or registered domestic partner, or be a leased or company vehicle which is assigned to you." <br />
<br />
BE AWARE! Winter parking gets all crazy in Madison (from November 15 - March 15). Most of town is on an alternate side parking schedule: cars should be parked on the even (resp. odd) house numbered side of the street from 1:00a.m. until 7:00 a.m. on even (resp. odd) numbered days. If you live on the isthmus in the Snow Emergency Zone, you will only need to do this when the weather gets really bad. You can sign up for alerts when this happens.<br />
<br />
If you leave your car in the wrong place -- with winter nonsense or for any other reason -- and it gets towed, you can call the Madison Police Department (266-4260) or Schmidt's Towing (257-0505) to find out what they've done with it.<br />
<br />
== Taxes ==<br />
Once you've lived here for an entire calendar year, be sure to look into the [http://www.dor.state.wi.us/faqs/ise/home.html Wisconsin Homestead Credit]... it's usually worth the time and effort for graduate students. Until then, you can look into [http://www.irs.gov/taxtopics/tc455.html deducting moving costs] for relocating here on your federal taxes.<br />
<br />
A warning to students on fellowship: taxes will not be taken out of your paycheck, but you still have to pay them. You may want to consider filing [http://www.irs.gov/faqs/faq/0,,id=199807,00.html quarterly].<br />
<br />
== Wisconsin benefit programs ==<br />
We don't exactly get piles of money for teaching. In fact, most people who are not on fellowship or receiving summer funding can qualify for some heating aid (up to $380/year), and electricity aid (up to $285/year). You can check your eligibility at [https://access.wisconsin.gov/ Access WI]. <br />
There may be some residency requirements, like the Homestead credit. You can find your annual salary in our [http://www.taa-madison.org/contract/index.html contract].<br />
<br />
== Residency ==<br />
While it's usually a good idea to become a WI resident, if, for some reason, you're looking to declare residency in WI for tuition purposes, the answer is usually "no." It seems that one has to be in Wisconsin for a full year before enrolling at the UW, and one has to prove that one did not move here primarily for educational purposes (according to the Wisconsin statutes, you have to provide "clear and convincing evidence"). More on that at the [http://www.registrar.wisc.edu/students/residence/index.php Office of the Registrar]'s site.<br />
<br />
= Contacts and Other Resources =<br />
*[http://info.gradsch.wisc.edu/education/gsc/gradguide/index.html Guide to Graduate Student Life]: The Graduate Student Collaborative's ([http://info.gradsch.wisc.edu/education/gsc/index.html GSC]) guide to grad student life in Madison -- like this one, but different.<br />
<br />
*[http://www.yelp.com/madison-wi Yelp.com]: Find reviews of local stuff- restaurants and things to do, but also dentists, auto shops, etc.<br />
<br />
*[http://www.vip.wisc.edu VIP], the Visitor & Information Programs office, located in the Red Gym, near [http://www.union.wisc.edu Memorial Union]. They are open M - F 8am - 5pm and Saturday 11am - 2pm. <br />
<br />
*[http://www.newstudent.wisc.edu Student Orientation Handbook] is a valuable resource for information including entertainment, recreational and varsity sports, student organizations (including those for cultural groups, international students, LGBT students, women, veterans, and people with disabilities), health services, jobs, transportation, safety, and housing. It’s also a great place for referrals to counseling services, including drug and alcohol and sexual assault issues. You can find all this information on the web, at http://www.wisc.edu/visitingCampus/ or call them at 263-2400. You can also email any questions you have to askbucky@uwmad.wisc.edu.<br />
<br />
*[http://www.lgbt.wisc.edu LGBT Campus Center]: The Lesbian, Gay, Bisexual, and Transgender Campus Center (265-3344; lgbtcc@rso.wisc.edu) provides support, social, educational and research services to the campus community, and serves as UW-Madison's first stop for those looking for information about campus LGBT organizations. The Memorial Union office on the 2nd floor includes a library, a television and DVD player, plenty of comfortable seating, open computers, and has a staff of students and professionals that work to bring events, speakers, and programs to campus. The Center also publishes a weekly events e-letter and offers support and social groups.<br />
<br />
*[http://www.math.wisc.edu/~wimaw/ WIMAW] (Women in Math at Wisconsin.)<br />
<br />
<br />
----<br />
<br />
Got Questions? Here are some folks who might just have the answers...<br />
<br />
== Counseling Services ==<br />
Counseling services are available through Counseling and [http://www.uhs.wisc.edu/services/counseling/ Consultation Services (C&CS)], located at 115 North Orchard Street, (265-5600, TTY number 265-3300). C&CS offers brief psychological treatment, personal counseling, and psychiatric services to UW-Madison students. Frequent services include help in overcoming depression, managing anxiety and other psychological issues, and in developing greater self-awareness, independence, and self-direction. They also provide personal problem counseling, couples relationship counseling, marriage and family counseling, cross-cultural counseling, and alcohol and drug assessment and referral. Specialized groups have included: graduate women support, women and self-esteem, interpersonal relationships, stress management, survivors of troubled families, rebuilding relationships. C&CS also provides crisis response at the above phone numbers. Services provided are covered by the student health fee (included in your student fees).<br />
<br />
== Administrative and Support Staff ==<br />
The administrative and support staff are the folk that keep our department functioning. Without them, we as mathematicians would be lost. :) Their contact info can be found [https://www.math.wisc.edu/contactus]. If one person doesn't know how to deal with a problem you might have, they certainly know who might be able to help you out.<br />
<br />
== Current and Former Graduate Students Interested in Meeting YOU ==<br />
You can find a complete list of current graduate students [http://www.math.wisc.edu/~apache/psdbgrad.html here], and pictures can be found [http://www.math.wisc.edu/~apache/gallery/grad.html here]. Email addresses that end with @ are intended to finish with @math.wisc.edu.<br />
<br />
Liban Mohamed<br />
Email: liban@<br />
[http://www.math.wisc.edu/~liban Website:]<br />
Grad-Age: Started 2014<br />
Area of interest: Analysis<br />
Ask Liban about: Anything, including in particular coursework, fellowships and housing.<br />
<br />
Hans Chaumont<br />
Email: chaumont@<br />
[http://www.math.wisc.edu/~chaumont Website:]<br />
Grad-Age: Started 2012<br />
Area of interest: Undecided<br />
Ask Hans about: Pretty much anything, but especially about tea or lifting weights.<br />
<br />
Laura Cladek<br />
Email: cladek@<br />
[http://www.math.wisc.edu/~cladek Website:]<br />
Grad-age: Started 2011<br />
Area of interest: Analysis<br />
Ask Laura about: Anything ... Especially analysis or on campus housing.<br />
<br />
Nathan Collins<br />
Email: nathan.collins@gmail.com<br />
[http://cs.pdx.edu/~ntc2 Website]<br />
Grad-age: M.S., 2008<br />
Area of interest: Computer Science and Logic.<br />
Ask Nathan about: Pittsburgh, bicycles, and being inferior to Mason at TAing. He dislikes printers and bad margins.<br />
<br />
Sara Jensen<br />
Email: jensen@<br />
[http://www.math.wisc.edu/~jensen Website:]<br />
Grad-age: Started 2008<br />
Area of interest: Algebra<br />
Ask Sara about: Teaching, topology & algebra quals, knitting group, going to the gym <br />
<br />
Christine Lien<br />
Email: lien@<br />
[http://www.math.wisc.edu/~lien Website]<br />
Grad-age: Started 2005<br />
Area of interest: Complex Geometry<br />
Ask Christine about: anything, including bridge/card games, organizing women's events, <br />
the Association of Asian American Graduate students, and the Graduate Student Topology Seminar.<br />
<br />
Beth Skubak<br />
Email: skubak@<br />
[http://www.math.wisc.edu/~skubak Website]<br />
Grad-age: Started 2009<br />
Area of interest: Probability<br />
Ask Beth about: anything, including this wiki</div>Nagreenhttps://www.math.wisc.edu/wiki/index.php?title=Main_Page&diff=17121Main Page2019-03-07T17:09:40Z<p>Nagreen: /* Welcome to the University of Wisconsin Math Department Wiki */</p>
<hr />
<div><br />
== Welcome to the University of Wisconsin Math Department Wiki ==<br />
<br />
This site is by and for the faculty, students and staff of the UW Mathematics Department. It contains useful information about the department, not always available from other sources. Pages can only be edited by members of the department but are viewable by everyone. <br />
<br />
*[[Getting Around Van Vleck]]<br />
<br />
*[[Computer Help]] <br />
<br />
*[[Connecting/Using our research servers]]<br />
<br />
*[[Graduate Student Guide]]<br />
<br />
*[[Teaching Resources]]<br />
<br />
== Research groups at UW-Madison ==<br />
<br />
*[[Algebra]]<br />
*[[Analysis]]<br />
*[[Applied|Applied Mathematics]]<br />
*[https://www.math.wisc.edu/wiki/index.php/Research_at_UW-Madison_in_DifferentialEquations Differential Equations]<br />
*[[Dynamics Special Lecture]]<br />
*[[Geometry and Topology]]<br />
* [http://www.math.wisc.edu/~lempp/logic.html Logic]<br />
*[[Probability]]<br />
<br />
== Math Seminars at UW-Madison ==<br />
<br />
*[[Colloquia|Colloquium]]<br />
*[[Algebra_and_Algebraic_Geometry_Seminar|Algebra and Algebraic Geometry Seminar]]<br />
*[[Analysis_Seminar|Analysis Seminar]]<br />
*[[Applied/ACMS|Applied and Computational Math Seminar]]<br />
*[http://www.math.wisc.edu/~zcharles/aas/index.html Applied Algebra Seminar]<br />
*[[Cookie_seminar|Cookie Seminar]]<br />
*[[Geometry_and_Topology_Seminar|Geometry and Topology Seminar]]<br />
*[[Group_Theory_Seminar|Group Theory Seminar]]<br />
*[[Networks_Seminar|Networks Seminar]]<br />
*[[NTS|Number Theory Seminar]]<br />
*[[PDE_Geometric_Analysis_seminar| PDE and Geometric Analysis Seminar]]<br />
*[[Probability_Seminar|Probability Seminar]]<br />
* [http://www.math.wisc.edu/~lempp/conf/swlc.html Southern Wisconsin Logic Colloquium]<br />
*[[Research Recruitment Seminar]]<br />
<br />
=== Graduate Student Seminars ===<br />
<br />
*[[AMS_Student_Chapter_Seminar|AMS Student Chapter Seminar]]<br />
*[[Graduate_Algebraic_Geometry_Seminar|Graduate Algebraic Geometry Seminar]]<br />
*[[Graduate_Applied_Algebra_Seminar|Graduate Applied Algebra Seminar]]<br />
*[[Applied/GPS| GPS Applied Math Seminar]]<br />
*[[NTSGrad_Spring_2019|Graduate Number Theory/Representation Theory Seminar]]<br />
*[[Symplectic_Geometry_Seminar|Symplectic Geometry Seminar]]<br />
*[[Math843Seminar| Math 843 Homework Seminar]]<br />
*[[Graduate_student_reading_seminar|Graduate Probability Reading Seminar]]<br />
*[[Summer_stacks|Summer 2012 Stacks Reading Group]]<br />
*[[Graduate_Student_Singularity_Theory]]<br />
*[[Graduate/Postdoc Topology and Singularities Seminar]]<br />
*[[Shimura Varieties Reading Group]]<br />
*[[Summer graduate harmonic analysis seminar]]<br />
*[[Graduate Logic Seminar]]<br />
*[[SIAM Student Chapter Seminar]]<br />
<br />
=== Other ===<br />
*[[Madison Math Circle]]<br />
*[[High School Math Night]]<br />
*[http://www.siam-uw.org/ UW-Madison SIAM Student Chapter]<br />
*[http://www.math.wisc.edu/%7Emathclub/ UW-Madison Math Club]<br />
*[[Putnam Club]]<br />
*[[Undergraduate Math Competition]]<br />
*[[Basic Linux Seminar]]<br />
*[[Basic HTML Seminar]]<br />
<br />
== Graduate Program ==<br />
<br />
* [[Algebra Qualifying Exam]]<br />
* [[Analysis Qualifying Exam]]<br />
* [[Topology Qualifying Exam]]<br />
<br />
== Undergraduate Program ==<br />
<br />
* [[Overview of the undergraduate math program|Overview]]<br />
* [[Groups looking to hire students as tutors]]<br />
<br />
== Getting started with Wiki-stuff ==<br />
<br />
Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.<br />
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br />
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br />
* [http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>Nagreen