Weil-etale cohomology and Frobenius rigidity
Organizers
Speaker
Thomas Geisser
Time
Thursday, April 10, 2025 3:00 PM - 4:00 PM
Venue
A6-101
Online
Zoom 638 227 8222
(BIMSA)
Abstract
In the first half of the talk I will give an overview over motivic cohomology theories and their applications for schemes over finite fields. In particular, I will explain that one can expect better behaved theories if one replaces the Galois group of the finite field by its Weil group. In the second half I will discuss recent work on the question if one can replace the algebraic closure of the finite field by larger algebraically closed fields in the construction of above theories.