| Description |
We continue investigation of problems in finite groups acting on finite dimensional spaces. We begin with an account of Rim's Theorem on the relation of cohomological triviality and projectivity for modules, using Tate cohomology. We then apply these results to construction of examples with many intersting and unusual properties, particularly for actions on products of spheres. Later, we consider the problem of the free p-rank of symmetry of products of spheres, and try to extend Carlsson's theorem to some new cases. |