Stratification and $π$-cosupport: Finite groups

Dave Benson, Srikanth B. Iyengar, Henning Krause, Julia Pevtsova

Published 2015-05-25Version 1

We introduce the notion of $\pi$-cosupport as a new tool for the stable module category of a finite group scheme. In the case of a finite group, we use this to give a new proof of the classification of tensor ideal localising subcategories. In a sequel to this paper, we carry out the corresponding classification for finite group schemes.