London Algebra Colloquium abstract
Bounding and unbounding Ext for algebraic groups
David Stewart (Oxford), 9th February 2012
Abstract
In 1984 Guralnick conjectured a universal bound on the dimension of 1-cohomology
for finite groups with coefficients in simple modules. Today the highest known value is just 3.
Recently there have been a couple of papers by Parshall and Scott providing new results
in this direction. I will talk about the results in those papers and some answers to
some questions raised therein.