Perverse mod p sheaves on the affine Grassmannian

Seminar: 
Algebra and Number Theory Seminar
Event time: 
Tuesday, December 3, 2019 - 4:15pm
Location: 
LOM 205
Speaker: 
Robert Cass
Speaker affiliation: 
Harvard University
Event description: 

Abstract: We will discuss a mod p version of the geometric Satake isomorphism, which provides a geometrization of the mod p Satake isomorphism. Along the way we will introduce perverse mod p sheaves and the Riemann-Hilbert correspondence of Emerton-Kisin. We will also apply Frobenius splitting techniques to prove the irreducibility of certain perverse mod p sheaves.