Event calendar file
School of Mathematics Seminars and Lectures
Bifunctors and cohomological finite generation
by Prof. Wilberd van der Kallen (Utrecht University, Netherlands)
Thursday, June 13, 2013
from
to
(Asia/Kolkata)
at Colaba Campus ( AG-77 )
at Colaba Campus ( AG-77 )
| Description |
The category of strict polynomial bifunctors over the field $\Bbb F_p$ has an interesting homological algebra. There are surprising formulas that describe the effect of Frobenius twist on certain Ext groups. We will explain some of this. The bifunctor theory has been crucial in the proof of my cohomological finite generation conjecture: If a reductive algebraic group $G$ defined over a field $k$ acts algebraically via algebra automorphisms on a finite type commutative $k$-algebra, then the graded $k$-algebra $H^*(G,A)$ is finitely generated. |
