Previous Special Year Seminar

Apr
13
2021

SL2 Seminar

Meldings and the codimension-three conjecture
Kari Vilonen
6:00pm|Remote Access

I will start by recalling the notion of microlocal perverse sheaves and then briefly explain meldings. The rest of the talk is devoted to explaining the ideas involved in the proof of the codimension-three conjecture.

Apr
08
2021

Quantum Groups Seminar

Representations of quantum groups at roots of 1
Jize Yu
4:00pm|Remote Access

We discuss modular representations of reductive algebraic groups and then proceed to representations of quantum groups at roots of unity

Apr
07
2021

Geometric and Modular Representation Theory Seminar

K-Motives and Koszul Duality in Geometric Representation Theory
Jens Eberhardt
3:00pm|Simonyi Hall 101 and Remote Access

Perverse sheaves and intersection cohomology are central objects in geometric representation theory. This talk is about their long-lost K-theoretic cousins, called K-motives. We will discuss definitions and basic properties of K-motives and explore...

Mar
30
2021

SL2 Seminar

No seminar: workshop
3:00pm|Remote Access
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
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...