Colloquia/Fall18: Difference between revisions

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= Mathematics Colloquium =
= Mathematics Colloquium =


All colloquia are on Fridays at 4:00 pm in Van Vleck B239, '''unless otherwise indicated'''.
All colloquia are on Fridays at 4:00 pm in Van Vleck B239, '''unless otherwise indicated'''.  The calendar for spring 2019 can be found [[Colloquia/Spring2019|here]].


<!-- ==[[Tentative Colloquia|Tentative schedule for next semester]] == -->
== Fall 2018 ==


== Fall 2016  ==
 
{| cellpadding="8"
!align="left" | date 
!align="left" | speaker
!align="left" | title
!align="left" | host(s)
|-
|September 9
|
|[[#  |    ]]
|
|
|-
|September 16
|[http://www.math.cmu.edu/~ploh/ Po-Shen Loh] (CMU)
|Directed paths: from Ramsey to Pseudorandomness
|Ellenberg
|
|-
|September 23
| [http://www.math.wisc.edu/~craciun/ Gheorghe Craciun] (UW-Madison)
|Toric Differential Inclusions and a Proof of the Global Attractor Conjecture
| Street
|[[#  |    ]]
|-
|September 30
|[http://math.uga.edu/~magyar/ Akos Magyar]  (University of Georgia)
|Geometric Ramsey theory
| Cook
|
|-
|October 7
|
|[[# |    ]]
|
|
|-
|October 14
|  [https://www.math.lsu.edu/~llong/ Ling Long] (LSU)
|TBA
| Yang
|
|-
|October 21
|'''No colloquium this week'''
|[[#  |    ]]
|
|
|-
|October 28
|  [http://order.ph.utexas.edu/people/Reichl.htm Linda Reichl] (UT Austin)
|TBA
|Minh-Binh Tran
|
|-
|November 4
| [https://www.math.ucdavis.edu/~shkoller/ Steve Shkoller] (UC Davis)
|TBA
| Feldman
|
|-
|Monday, November 7 at 4:30 ([http://www.ams.org/meetings/lectures/maclaurin-lectures AMS Maclaurin lecture])
| [http://www.massey.ac.nz/massey/expertise/profile.cfm?stref=339830 Gaven Martin] (New Zealand Institute for Advanced Study)
|Siegel's problem on small volume lattices
| Marshall
|
|-
|November 11
|  Reserved for possible job talks
|[[# |    ]]
|
|
|-
|November 18
|  Reserved for possible job talks
|[[# |    ]]
|
|
|-
|November 25
|  '''Thanksgiving break'''
|[[# |    ]]
|
|
|-
|December 2
|  Reserved for possible job talks
|[[# |    ]]
|
|
|-
|December 9
|  Reserved for possible job talks
|[[# |    ]]
|
|}


== Spring 2017  ==
 
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date   
!align="left" | date   
Line 115: Line 12:
!align="left" | host(s)
!align="left" | host(s)
|-
|-
|January 20
|Sep 12, 14
|Reserved for possible job talks 
| [https://sites.math.washington.edu/~gunther/ Gunther Uhlmann] (Univ. of Washington) Distinguished Lecture series
|[[#  |    ]]
|[[# TBA|  TBA ]]
|
| Li
|
|
|-
|-
|January 27
|Sep 21
|Reserved for possible job talks
| Andrew Stuart (Caltech) LAA lecture
|[[# |    ]]
|[[# TBA|  TBA ]]
|
|
|-
|February 3
|[[#  |    ]]
|
|-
|February 6 (Wasow lecture)
| Benoit Perthame (University of Paris VI)
|[[# TBA|  TBA ]]  
| Jin
| Jin
|-
|February 10
| '''No Colloquium'''
|[[# |  ]]
|
|
|
|-
|-
|February 17
|Sep 28
|
| Gautam Iyer (CMU)
|[[#   |     ]]
|[[# TBA| TBA  ]]
|  
| Thiffeault
|
|
|-
|-
|February 24
|Oct 5
|
| person (institution)
|[[#  |    ]]
|[[# TBA|  TBA ]]
|  
| hosting faculty
|
|
|-
|-
|March 3
|Oct 12
| [http://www.math.utah.edu/~bromberg/ Ken Bromberg] (University of Utah)
| Arie Levit (Yale)
|[[# |   ]]
|[[# TBA| TBA  ]]
|Dymarz
| Gurevich
|
|
|-
|-
|Tuesday, March 7, 4PM (Distinguished Lecture)
|Oct 19
| [http://pages.iu.edu/~temam/ Roger Temam] (Indiana University)  
Jeremy Teitelbaum (U Connecticut)
|[[#  |    ]]
|[[# TBA|  TBA ]]
|Smith
| Boston
|
|
|-
|-
|Wednesday, March 8, 2:25PM
|Oct 26
| [http://pages.iu.edu/~temam/  Roger Temam] (Indiana University)  
| Douglas Ulmer (Arizona)
|[[#  |    ]]
|[[# TBA|  TBA ]]
|Smith
| Yang
|
|
|-
|-
|March 10
|Nov 2
| '''No Colloquium'''
| Reserved for job talk
|[[# |   ]]
|[[# TBA| TBA  ]]
|
| hosting faculty
|
|
|-
|-
|March 17
|Nov 9
|
| Reserved for job talk
|
|[[# TBA|  TBA  ]]
|
| hosting faculty
|
|
|-
|-
|March 24
|Nov 16
| '''Spring Break'''
| Reserved for job talk
|[[# |   ]]
|[[# TBA| TBA  ]]
|
| hosting faculty
|
|
|-
|-
|Wednesday, March 29 (Wasow)
|Nov 30
| [https://math.nyu.edu/faculty/serfaty/ Sylvia Serfaty] (NYU)
| Reserved for job talk
|[[# TBA|   TBA]]
|[[# TBA| TBA ]]
|Tran
| hosting faculty
|
|
|-
|-
|March 31
|Dec 7
| '''No Colloquium'''
| Reserved for job talk
|[[# |   ]]
|[[# TBA| TBA  ]]
|
| hosting faculty
|
|
|-
|-
|April 7
|date
| [http://www.math.uiuc.edu/~schenck/ Hal Schenck]
| person (institution)
|[[# |   ]]
|[[# TBA| TBA  ]]
|Erman
| hosting faculty
|
|
|-
|April 14
|  Wilfrid Gangbo
|[[# |    ]]
|Feldman & Tran
|
|-
|April 21
|  [http://www.math.stonybrook.edu/~mde/ Mark Andrea de Cataldo]  (Stony Brook)
|TBA
| Maxim
|
|-
|April 28
| [http://users.cms.caltech.edu/~hou/ Thomas Yizhao Hou] 
|[[# TBA|  TBA  ]]
|Li
|}
|}


== Abstracts ==
== Abstracts ==
=== September 16: Po-Shen Loh (CMU) ===
Title: Directed paths: from Ramsey to Pseudorandomness


Abstract: Starting from an innocent Ramsey-theoretic question regarding directed
=== <DATE>: <PERSON> (INSTITUTION) ===
paths in graphs, we discover a series of rich and surprising connections
Title: <TITLE>
that lead into the theory around a fundamental result in Combinatorics:
Szemeredi's Regularity Lemma, which roughly states that every graph (no
matter how large) can be well-approximated by a bounded-complexity
pseudorandom object.  Using these relationships, we prove that every
coloring of the edges of the transitive N-vertex tournament using three
colors contains a directed path of length at least sqrt(N) e^{log^* N}
which entirely avoids some color.  The unusual function log^* is the
inverse function of the tower function (iterated exponentiation).


=== September 30: Akos Magyar (University of Georgia) ===
Abstract: <ABSTRACT>
Title: Geometric Ramsey theory


Abstract: Initiated by Erdos, Graham, Montgomery and others in the 1970's, geometric Ramsey theory studies geometric configurations, determined up to translations, rotations and possibly dilations, which cannot be destroyed by finite partitions of Euclidean spaces. Later it was shown by ergodic and Fourier analytic methods that such results are also possible in the context of sets of positive upper density in Euclidean spaces or the integer lattice. We present a new approach, motivated by developments in arithmetic combinatorics, which provide new results as well new proofs of some classical results in this area.


===November 7: Gaven Martin (New Zealand Institute for Advanced Study) ===
Title: Siegel's problem on small volume lattices


Abstract: We outline in very general terms the history and the proof of the identification
== Past Colloquia ==
of the minimal covolume lattice of hyperbolic 3-space as the 3-5-3
Coxeter group extended by the involution preserving the symmetry of this
diagram. This gives us the smallest regular tessellation of hyperbolic 3-space.
This solves (in three dimensions) a problem posed by Siegel in 1945.  Siegel solved this problem in two dimensions by deriving the
signature formula identifying the (2,3,7)-triangle group as having minimal
co-area.
There are strong connections with arithmetic hyperbolic geometry in
the proof, and the result has applications in the maximal symmetry groups
of hyperbolic 3-manifolds in much the same way that Hurwitz's 84g-84 theorem
and Siegel's result do.


== Past Colloquia ==
[[Colloquia/Blank|Blank]]
 
[[Colloquia/Spring2018|Spring 2018]]
 
[[Colloquia/Fall2017|Fall 2017]]
 
[[Colloquia/Spring2017|Spring 2017]]
 
[[Archived Fall 2016 Colloquia|Fall 2016]]


[[Colloquia/Spring2016|Spring 2016]]
[[Colloquia/Spring2016|Spring 2016]]

Revision as of 06:08, 18 July 2018

Mathematics Colloquium

All colloquia are on Fridays at 4:00 pm in Van Vleck B239, unless otherwise indicated. The calendar for spring 2019 can be found here.

Fall 2018

date speaker title host(s)
Sep 12, 14 Gunther Uhlmann (Univ. of Washington) Distinguished Lecture series TBA Li
Sep 21 Andrew Stuart (Caltech) LAA lecture TBA Jin
Sep 28 Gautam Iyer (CMU) TBA Thiffeault
Oct 5 person (institution) TBA hosting faculty
Oct 12 Arie Levit (Yale) TBA Gurevich
Oct 19 Jeremy Teitelbaum (U Connecticut) TBA Boston
Oct 26 Douglas Ulmer (Arizona) TBA Yang
Nov 2 Reserved for job talk TBA hosting faculty
Nov 9 Reserved for job talk TBA hosting faculty
Nov 16 Reserved for job talk TBA hosting faculty
Nov 30 Reserved for job talk TBA hosting faculty
Dec 7 Reserved for job talk TBA hosting faculty
date person (institution) TBA hosting faculty

Abstracts

<DATE>: <PERSON> (INSTITUTION)

Title: <TITLE>

Abstract: <ABSTRACT>


Past Colloquia

Blank

Spring 2018

Fall 2017

Spring 2017

Fall 2016

Spring 2016

Fall 2015

Spring 2015

Fall 2014

Spring 2014

Fall 2013

Spring 2013

Fall 2012