Title: Finite cohomological generation: old and new
Speaker: Vincent Franjou
Speaker Info: Université de Nantes
Brief Description:
Special Note: Unusual day
Abstract:
A classic problem in invariant theory, often referred to as Hilbert's 14th problem, asks, when a group acts on a finitely generated commutative algebra by algebra automorphisms, whether the ring of invariants is still finitely generated. The question extends to finite generation of the cohomology algebra of a group. We'll present recent progress and generalizations with a stress on the case of a general base ring, keeping as a model Evens' statement for finite groups.Date: Friday, October 28, 2011