Previous Special Year Seminar

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...

Mar
18
2021

Quantum Groups Seminar

Algebraic groups and all in characteristic p
Ivan Loseu
4:00pm|Remote Access

The talk discusses basics of quantum groups at roots of unity with motivation from modular representation theory.

Mar
17
2021

Geometric and Modular Representation Theory Seminar

Affine Hecke category and noncommutative Springer resolution
Roman Bezrukavnikov
3:00pm|Simonyi Hall 101 and Remote Access

I will start with a few comments on the proof of the equivalence presented in the previous talks. Then I will focus on the description of the abelian category of perverse sheaves on the affine flag variety on the coherent side, where the answer is...

Mar
16
2021

SL2 Seminar

Microlocal sheaves II: morphisms, microperverse sheaves and regular singularities
Michael McBreen
6:00pm|Remote Access

We introduce basic tools of the trade: the Fourier-Sato transform, specialisation, Sato's microlocalisation and the microhom functor, culminating with a concrete description of the morphisms in our category of microlocal sheaves. We use quantized...