Higher Limits via Subgroup Complexes

Abstract

Abelian group-valued functors on the orbit category of a finite group G are ubiquitous both in group theory and in much of homotopy theory. In this paper we give a new finite model for lim ∗ D F, the higher derived functors of the inverse limit functor, for a general functor F: Dop → Z (p)- mod, where