Perverse mod p sheaves on affine flag varieties

Robert Cass (Caltech)

06-Apr-2022, 20:00-21:00 (24 months ago)

Abstract: Perverse sheaves have important applications in representation theory and number theory. In this talk we will consider the case of mod p étale sheaves on affine flag varieties over a field of characteristic p. Despite the pathological behavior of such sheaves, they encode the structure of mod p Hecke algebras. We will primarily focus on a version of the geometric Satake equivalence for the affine Grassmannian. Time permitting, we may also discuss central sheaves on the Iwahori affine flag variety. Part of this is joint work with Cédric Pépin.

representation theory

Audience: researchers in the topic


MIT Lie groups seminar

Series comments: Description: Research seminar on Lie groups

This seminar will take place entirely online: Zoom Meeting Link. You should be able to watch live video at this link. Your microphone will be muted, but you are welcome to unmute it (microphone icon on the lower left of the Zoom window, perhaps visible only when you put your mouse near there) to ask a question.

Organizers: André Lee Dixon*, Ju-Lee Kim, Roman Bezrukavnikov*
*contact for this listing

Export talk to