02-08
Hochschild Cohomology of Tame Blocks
Preprint series: 02-08, Preprints
- MSC:
- 20C05 Group rings of finite groups and their modules, See Also { 16S34}
- 16E40 Hochschild and other homology and cohomology theories for rings
- 16G60 Representation type (finite, tame, wild, etc.)
Abstract: We study the additive structure of Hochschild cohomology for blocks of modular group algebras of tame representation type. We give explicit formulae for the dimensions of the cohomology groups and compute the Poincare series of the Hochschild cohomology ring for all tame blocks having one or three simple modules.
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