Geometry seminar: Spring 2007
Tuesday 4/24
Alexander Shumakovitch (GWU)
Tuesday 4/10
Stefan Friedl (Montreal)
Subgroup
separability and symplectic 4-manifolds
Abstract:
In 1976 Thurston showed that if N is a fibered 3-manifold,
then
S^1 x N is symplectic. In this talk we will show that the
converse
holds if pi_1(N) satisfies certain
subgroup separability properties.
We will not assume any prior knowledge of symplectic
geometry.
Tuesday 3/20
Kevin Wortman (Yale)
Quasi-isometries
of arithmetic groups
Tuesday 3/13
Dan
Margalit (University of Utah)
Generating the symmetric Torelli
group
Tuesday 2/20
Tom
Mark
Constructions of exotic smooth
4-manifolds
Geometry seminar: Fall 2006
Tuesday 9/5
Slava
Krushkal
On non-abelian Alexander duality
in dimension 4
Tuesday 9/12
Tom
Mark
Heegaard Floer homology and its
applications
Tuesday 9/19
Tom
Mark
Heegaard Floer homology and
symplectic geometry
Tuesday 10/3
Tom
Mark
Introduction to the Casson
invariant
Tuesday 10/17
Martin
Kassabov, Cornell
Kazhdan property T and its
applications
Abstract:
In this talk I will define Kazhdan property T and its variants
and discuss several
recent results. In particular I
will describe how representation theory can be
used to study finite covers of 3
dimensional manifolds and outline an ongoing
program, which may lead to a proof
of the Virtual Hakken Conjecture.
Tuesday 10/24
Sucharit
Sarkar, Princeton
A combinatorial description of some Heegaard Floer
homologies
Tuesday 10/31
Slava
Krushkal
Topological arbiters
Tuesday 11/28
Tom
Mark
An introduction to Taubes’s
work on the Weinstein conjecture
Thursday 11/30
Brendan
Owens, LSU
Knots, crossing changes, and
Heegaard Floer homology
Archives:
Geometry seminar, Fall 04
Geometry seminar, Fall 03