Previous Conferences & Workshops

Apr
07
2017

Homological Mirror Symmetry Mini-Workshop

Theta functions and quiver representations
Man Wai Cheung
11:15am

In the talk, we will discuss how to relate scattering diagram with quiver representations. Then we can see how the broken lines give a stratification of quiver Grassmannian. At the end, we will briefly discuss how we can fry to compute the structure...

Apr
07
2017

Homological Mirror Symmetry Mini-Workshop

Two rigid algebras and a heat kernel
Amitai Zernik
10:00am

Consider the Fukaya A8 algebra $E$ of $RP^{2m}$ in $CP^{2m}$ (with bulk and equivariant deformations, over the Novikov ring). On the one hand, elementary algebraic considerations show that E admis a rigid cyclic minimal model, whose structure...

Apr
06
2017

Joint IAS/Princeton University Number Theory Seminar

Basic loci of Shimura varieties
4:15pm

In mod-$p$ reductions of modular curves, there is a finite set of supersingular points and its open complement corresponding to ordinary elliptic curves. In the study of mod-$p$ reductions of more general Shimura varieties, there is a "Newton...

Apr
06
2017

Joint IAS/Princeton University Symplectic Geometry Seminar

On Zimmer's conjecture
Sebastian Hurtado-Salazar
10:45am

The group $\mathrm{SL}_n(\mathbb Z)$ (when $n > 2$) is very rigid, for example, Margulis proved all its linear representations come from representations of $\mathrm{SL}_n(\mathbb R)$ and are as simple as one can imagine. Zimmer's conjecture states...

Apr
05
2017

Mathematical Conversations

Almost commuting matrices: finite- and infinite-dimensional proofs
6:00pm

I will first give an outline of Lin-Friis-Rordam’s proof of the fact that almost commuting matrices are close to commuting matrices uniformly in the dimension. The proof is short and beautiful, but it involves an infinite-dimensional argument which...