Previous Conferences & Workshops

Mar
26
2021

Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Three 20min research talks
Jesse Huang, Shaoyun Bai and Thomas Melistas
9:15am|Remote Access

Jesse Huang (UIUC), Variation of FLTZ skeleta

In this short talk, I will discuss an interpolation of FLTZ skeleta mirror to derived equivalent toric varieties. This is joint work with Peng Zhou.

Shaoyun Bai (Princeton), $SU(n)$–Casson invariants...

Mar
25
2021

Joint IAS/Princeton University Number Theory Seminar

The local Gan-Gross-Prasad conjecture for real unitary groups
Hang Xue
4:30pm|Remote Access

A classical branching theorem of Weyl describes how an irreducible representation of compact $U(n+1)$ decomposes when restricted to $U(n)$. The local Gan-Gross-Prasad conjecture provides a conjectural extension to the setting of representations of...

Mar
24
2021

Mathematical Conversations

Surfaces and Point Processes
Jayadev Athreya
5:30pm|Remote Access

We'll give several concrete examples of how to go from the geometry of surfaces to the study of point processes, following work of Siegel, Veech, Masur, Eskin, Mirzakhani, Wright, and others. We'll discuss how this "probabilistic" perspective helps...

Mar
24
2021

Geometric and Modular Representation Theory Seminar

Parabolic version of the two realizations theorem and applications to modular representation theory
Ivan Loseu
3:00pm|Simonyi Hall 101 and Remote Access

The goal of this talk is two-fold. We state a parabolic version of the two realizations theorem and sketch a proof. This version relates Iwahori-constructible sheaves on parabolic affine flag variety to coherent sheaves on a parabolic version of the...

Mar
24
2021

Stability and Testability

Why was Connes' embedding conjecture refuted and there are still no known non-hyperlinear groups?
Michael Chapman
11:00am|Remote Access

In [MIP*=RE by JNVWY] the authors construct a non-local game that resolves Tsirelson's problem to the negative and by that refute Connes' embedding conjecture (CEC). The game *-algebra (see e.g. [KPS]) enables one to construct a finitely presented *...

Mar
23
2021

SL2 Seminar

Microlocal sheaves III: Regular singularities and Riemann-Hilbert
Michael McBreen
6:00pm|Remote Access

In the last talk of this series, we discuss the microlocal criterion for regular singularities of a D-module, and the existence of special filtrations on regular holonomic microdifferential modules. This allows us to define a D-module-theoretic...

Mar
23
2021

Computer Science/Discrete Mathematics Seminar II

Amortized circuit complexity, formal complexity measures, and catalytic algorithms
Jeroen Zuiddam
10:30am|Simonyi Hall 101 and Remote Access - see Zoom link below

Some of the central questions in complexity theory address the amortized complexity of computation (also sometimes known as direct sum problems). While these questions appear in many contexts, they are all variants of the following: 

Is the best...