Difference between revisions of "Analysis Seminar"
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The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated. | The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated. | ||
− | If you wish to invite a speaker please contact | + | If you wish to invite a speaker please contact Brian at street(at)math |
===[[Previous Analysis seminars]]=== | ===[[Previous Analysis seminars]]=== | ||
− | = | + | = Analysis Seminar Schedule = |
{| cellpadding="8" | {| cellpadding="8" | ||
!align="left" | date | !align="left" | date | ||
Line 16: | Line 16: | ||
!align="left" | host(s) | !align="left" | host(s) | ||
|- | |- | ||
− | | | + | |Sept 11 |
− | | | + | | Simon Marshall |
| UW Madison | | UW Madison | ||
− | |[[# | + | |[[#Simon Marshall | Integrals of eigenfunctions on hyperbolic manifolds ]] |
− | | | + | | |
|- | |- | ||
− | | | + | |'''Wednesday, Sept 12''' |
− | | | + | | Gunther Uhlmann |
− | | | + | | University of Washington |
− | | | + | | Distinguished Lecture Series |
− | | | + | | See colloquium website for location |
|- | |- | ||
− | | | + | |'''Friday, Sept 14''' |
− | | | + | | Gunther Uhlmann |
− | | | + | | University of Washington |
− | | | + | | Distinguished Lecture Series |
− | | | + | | See colloquium website for location |
|- | |- | ||
− | | | + | |Sept 18 |
− | | | + | | Grad Student Seminar |
− | | | + | | |
− | | | + | | |
− | | | + | | |
|- | |- | ||
− | | | + | |Sept 25 |
− | | | + | | Grad Student Seminar |
− | | | + | | |
− | | | + | | |
− | + | | | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | | | ||
|- | |- | ||
− | | | + | |Oct 9 |
− | | | + | | Hong Wang |
− | | | + | | MIT |
− | |[[# | + | |[[#Hong Wang | About Falconer distance problem in the plane ]] |
− | | | + | | Ruixiang |
|- | |- | ||
− | | | + | |Oct 16 |
− | | | + | | Polona Durcik |
− | | | + | | Caltech |
− | |[[# | + | |[[#Polona Durcik | Singular Brascamp-Lieb inequalities and extended boxes in R^n ]] |
− | | | + | | Joris |
|- | |- | ||
− | | | + | |Oct 23 |
− | | | + | | Song-Ying Li |
− | | | + | | UC Irvine |
− | |[[# | + | |[[#Song-Ying Li | Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold ]] |
− | | | + | | Xianghong |
|- | |- | ||
− | | | + | |Oct 30 |
− | | | + | |Grad student seminar |
− | | | + | | |
− | | | + | | |
− | | | + | | |
|- | |- | ||
− | | | + | |Nov 6 |
− | | | + | | Hanlong Fang |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
| UW Madison | | UW Madison | ||
− | |[[# | + | |[[#HanlongFang | A generalization of the theorem of Weil and Kodaira on prescribing residues ]] |
− | | | + | | Brian |
|- | |- | ||
− | | | + | ||'''Monday, Nov. 12, B139''' |
− | + | | Kyle Hambrook | |
− | + | | San Jose State University | |
− | + | |[[#Kyle Hambrook | Fourier Decay and Fourier Restriction for Fractal Measures on Curves ]] | |
− | |||
− | |||
− | |Monday, | ||
− | |||
− | |||
− | |||
− | |||
− | | | ||
− | | | ||
− | |||
− | |||
− | |[[# | ||
| Andreas | | Andreas | ||
|- | |- | ||
+ | |Nov 13 | ||
+ | | Laurent Stolovitch | ||
+ | | Université de Nice - Sophia Antipolis | ||
+ | |[[#Laurent Stolovitch | Equivalence of Cauchy-Riemann manifolds and multisummability theory ]] | ||
+ | |Xianghong | ||
|- | |- | ||
− | | | + | |Nov 20 |
+ | | Grad Student Seminar | ||
| | | | ||
+ | |[[#linktoabstract | ]] | ||
| | | | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
|- | |- | ||
− | | | + | |Nov 27 |
+ | | No Seminar | ||
| | | | ||
+ | |[[#linktoabstract | Title ]] | ||
| | | | ||
− | |||
− | |||
|- | |- | ||
− | | | + | |Dec 4 |
+ | | No Seminar | ||
| | | | ||
+ | |[[#linktoabstract | Title ]] | ||
| | | | ||
− | | [[# | + | |- |
+ | |Jan 22 | ||
+ | | Brian Cook | ||
+ | | Kent | ||
+ | |[[#linktoabstract | Equidistribution results for integral points on affine homogenous algebraic varieties ]] | ||
+ | | Street | ||
+ | |- | ||
+ | |Jan 29 | ||
+ | | Trevor Leslie | ||
+ | | UW Madison | ||
+ | |[[#linktoabstract | Title ]] | ||
| | | | ||
|- | |- | ||
− | | | + | |'''Wed, Jan 30''' |
− | | | + | | Lillian Pierce |
− | | | + | | Duke |
− | | [[# | + | |[[#linktoabstract | Title ]] |
− | | | + | | |
+ | |- | ||
+ | |'''Thur, Jan 31''' | ||
+ | | Dean Baskin | ||
+ | | TAMU | ||
+ | |[[#linktoabstract | Title ]] | ||
+ | | | ||
+ | |- | ||
+ | |Feb 5, '''B239''' | ||
+ | | Alexei Poltoratski | ||
+ | | Texas A&M | ||
+ | |[[#linktoabstract | Title ]] | ||
+ | | Denisov | ||
|- | |- | ||
− | | | + | |'''Friday, Feb 8''' |
− | | | + | | Aaron Naber |
− | | | + | | Northwestern University |
− | | [[# | + | |[[#linktoabstract | Title ]] |
− | | | + | | See colloquium website for location |
|- | |- | ||
− | | | + | |Feb 12 |
+ | | Shaoming Guo | ||
+ | | UW Madison | ||
+ | |[[#linktoabstract | Title ]] | ||
| | | | ||
− | | | + | |- |
− | | | + | |Feb 19 |
+ | | No seminar | ||
+ | | | ||
+ | | | ||
| | | | ||
|- | |- | ||
− | | | + | |Feb 26 |
− | | | + | | No Seminar |
− | | | + | | |
− | |||
| | | | ||
|- | |- | ||
− | | | + | |Mar 5 |
− | | | + | | Loredana Lanzani |
− | | | + | | Syracuse University |
− | | [[# | + | |[[#linktoabstract | Title ]] |
+ | | Xianghong | ||
+ | |- | ||
+ | |Mar 12 | ||
+ | | No Seminar | ||
+ | | | ||
+ | |[[#linktoabstract | Title ]] | ||
| | | | ||
|- | |- | ||
− | | | + | |Mar 19 |
+ | |Spring Break!!! | ||
| | | | ||
− | |||
− | |||
| | | | ||
+ | | | ||
+ | |- | ||
+ | |Mar 26 | ||
+ | | Person | ||
+ | | Institution | ||
+ | |[[#linktoabstract | Title ]] | ||
+ | | Sponsor | ||
+ | |- | ||
+ | |Apr 2 | ||
+ | | Stefan Steinerberger | ||
+ | | Yale | ||
+ | |[[#linktoabstract | Title ]] | ||
+ | | Shaoming, Andreas | ||
|- | |- | ||
− | | | + | |
− | | | + | |Apr 9 |
− | | | + | | Franc Forstnerič |
− | | [[# | + | | Unversity of Ljubljana |
− | | | + | |[[#linktoabstract | Title ]] |
+ | | Xianghong, Andreas | ||
+ | |- | ||
+ | |Apr 16 | ||
+ | | Andrew Zimmer | ||
+ | | Louisiana State University | ||
+ | |[[#linktoabstract | Title ]] | ||
+ | | Xianghong | ||
|- | |- | ||
− | | | + | |Apr 23 |
− | | | + | | Person |
− | | | + | | Institution |
− | | [[# | + | |[[#linktoabstract | Title ]] |
− | | | + | | Sponsor |
|- | |- | ||
− | | | + | |Apr 30 |
− | | | + | | Person |
− | | | + | | Institution |
− | | [[# | + | |[[#linktoabstract | Title ]] |
− | | | + | | Sponsor |
|- | |- | ||
|} | |} | ||
=Abstracts= | =Abstracts= | ||
− | === | + | ===Simon Marshall=== |
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− | + | ''Integrals of eigenfunctions on hyperbolic manifolds'' | |
− | + | 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. | |
− | |||
− | + | ===Hong Wang=== | |
− | + | ''About Falconer distance problem in the plane'' | |
− | + | 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. | |
− | + | ===Polona Durcik=== | |
− | + | ''Singular Brascamp-Lieb inequalities and extended boxes in R^n'' | |
− | + | 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. | |
− | |||
− | |||
− | + | ===Song-Ying Li=== | |
− | |||
− | |||
− | |||
+ | ''Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold'' | ||
− | + | In this talk, I will present my recent works with my collaborators on the lower bound and upper bounds estimates | |
− | + | for the first positive eigenvalues of Kohn Laplacian and sub-Laplacian on a strictly pseudoconvex pseudo-Hermitian CR manifold, | |
+ | which include CR Lichnerowicz-Obata theorem for the lower and upper bounds for the first positive eigenvalue for the | ||
+ | Kohn Laplacian on strictly pseudoconvex hypersurfaces. | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
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− | |||
− | + | ===Hanlong Fan=== | |
− | |||
− | |||
− | |||
− | |||
− | + | ''A generalization of the theorem of Weil and Kodaira on prescribing residues'' | |
− | |||
− | + | 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. | |
− | |||
− | + | ===Kyle Hambrook=== | |
− | |||
− | |||
− | |||
− | + | ''Fourier Decay and Fourier Restriction for Fractal Measures on Curves'' | |
− | + | I will discuss my recent work on some problems concerning | |
+ | Fourier decay and Fourier restriction for fractal measures on curves. | ||
− | + | ===Laurent Stolovitch=== | |
− | + | ''Equivalence of Cauchy-Riemann manifolds and multisummability theory'' | |
− | + | 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. | |
− | |||
− | === | + | ===Brian Cook=== |
− | + | ''Equidistribution results for integral points on affine homogenous algebraic varieties'' | |
− | + | 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. | |
=Extras= | =Extras= | ||
[[Blank Analysis Seminar Template]] | [[Blank Analysis Seminar Template]] |
Latest revision as of 16:17, 9 January 2019
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(at)math
Contents
Previous Analysis seminars
Analysis Seminar Schedule
date | speaker | institution | title | host(s) |
---|---|---|---|---|
Sept 11 | Simon Marshall | UW Madison | Integrals of eigenfunctions on hyperbolic manifolds | |
Wednesday, Sept 12 | Gunther Uhlmann | University of Washington | Distinguished Lecture Series | See colloquium website for location |
Friday, Sept 14 | Gunther Uhlmann | University of Washington | Distinguished Lecture Series | See colloquium website for location |
Sept 18 | Grad Student Seminar | |||
Sept 25 | Grad Student Seminar | |||
Oct 9 | Hong Wang | MIT | About Falconer distance problem in the plane | Ruixiang |
Oct 16 | Polona Durcik | Caltech | Singular Brascamp-Lieb inequalities and extended boxes in R^n | Joris |
Oct 23 | Song-Ying Li | UC Irvine | Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold | Xianghong |
Oct 30 | Grad student seminar | |||
Nov 6 | Hanlong Fang | UW Madison | A generalization of the theorem of Weil and Kodaira on prescribing residues | Brian |
Monday, Nov. 12, B139 | Kyle Hambrook | San Jose State University | Fourier Decay and Fourier Restriction for Fractal Measures on Curves | Andreas |
Nov 13 | Laurent Stolovitch | Université de Nice - Sophia Antipolis | Equivalence of Cauchy-Riemann manifolds and multisummability theory | Xianghong |
Nov 20 | Grad Student Seminar | |||
Nov 27 | No Seminar | Title | ||
Dec 4 | No Seminar | Title | ||
Jan 22 | Brian Cook | Kent | Equidistribution results for integral points on affine homogenous algebraic varieties | Street |
Jan 29 | Trevor Leslie | UW Madison | Title | |
Wed, Jan 30 | Lillian Pierce | Duke | Title | |
Thur, Jan 31 | Dean Baskin | TAMU | Title | |
Feb 5, B239 | Alexei Poltoratski | Texas A&M | Title | Denisov |
Friday, Feb 8 | Aaron Naber | Northwestern University | Title | See colloquium website for location |
Feb 12 | Shaoming Guo | UW Madison | Title | |
Feb 19 | No seminar | |||
Feb 26 | No Seminar | |||
Mar 5 | Loredana Lanzani | Syracuse University | Title | Xianghong |
Mar 12 | No Seminar | Title | ||
Mar 19 | Spring Break!!! | |||
Mar 26 | Person | Institution | Title | Sponsor |
Apr 2 | Stefan Steinerberger | Yale | Title | Shaoming, Andreas |
Apr 9 | Franc Forstnerič | Unversity of Ljubljana | Title | Xianghong, Andreas |
Apr 16 | Andrew Zimmer | Louisiana State University | Title | Xianghong |
Apr 23 | Person | Institution | Title | Sponsor |
Apr 30 | Person | Institution | Title | Sponsor |
Abstracts
Simon Marshall
Integrals of eigenfunctions on hyperbolic manifolds
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.
Hong Wang
About Falconer distance problem in the plane
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.
Polona Durcik
Singular Brascamp-Lieb inequalities and extended boxes in R^n
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.
Song-Ying Li
Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold
In this talk, I will present my recent works with my collaborators on the lower bound and upper bounds estimates for the first positive eigenvalues of Kohn Laplacian and sub-Laplacian on a strictly pseudoconvex pseudo-Hermitian CR manifold, which include CR Lichnerowicz-Obata theorem for the lower and upper bounds for the first positive eigenvalue for the Kohn Laplacian on strictly pseudoconvex hypersurfaces.
Hanlong Fan
A generalization of the theorem of Weil and Kodaira on prescribing residues
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.
Kyle Hambrook
Fourier Decay and Fourier Restriction for Fractal Measures on Curves
I will discuss my recent work on some problems concerning Fourier decay and Fourier restriction for fractal measures on curves.
Laurent Stolovitch
Equivalence of Cauchy-Riemann manifolds and multisummability theory
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.
Brian Cook
Equidistribution results for integral points on affine homogenous algebraic varieties
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.