Type: Seminar

Distribution: World

Expiry: 12 Nov 2009

Auth: billu@daumier.maths.usyd.edu.au

Speaker: Derek Holt (University of Warwick) Title: Computing Projective Indecomposable Modules of Finite Groups Over Finite Fields Time & Place: 3-4pm, Thursday 12 November, Carslaw 173 Abstract: Projective Indecomposable modules for finite groups have a number of applications, such as computing higher dimensional cohomology groups by dimension shifting. We consider possible methods for computing them. The most promising approach seems to be to find so-called peakwords for the irreducible modules in the group algebra of the group, and to use them to construct the projective indecomposables as summands of suitable permutation modules.