Geometry and Physics Seminar: Angelo Vistoli
Topic
Cohomological invariants of algebraic stacks (after Robert Pirisi)
Speakers
Details
Galois cohomological invariants for algebraic groups are an arithmetic analogue of characteristic classes in algebraic topology; Totaro and Guillot connected them to unramified étale cohomology and Rost’s higher Chow Groups.
In his PhD thesis, Roberto Pirisi generalizes the theory of Galois cohomological invariants to smooth Artin stacks of finite type over a field, and computes the cohomological invariants for stacks of hyperelliptic curves of even genus. Furthermore he defines Rost’s higher Chow groups for Artin stacks.
Additional Information
Location: ESB 2012
Angelo Vistoli, Scuola Normale Superiore
Angelo Vistoli, Scuola Normale Superiore
This is a Past Event
Event Type
Scientific, Seminar
Date
April 27, 2015
Time
-
Location