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math.KT2021
Symmetric Hochschild cohomology of twisted group algebras
Tiberiu Coconet, Constantin-Cosmin Todea
We show that there is an action of the symmetric group on the Hochschild cochain complex of a twisted group algebra with coefficients in a bimodule. This allows us to define the sy…
math.KT2015
Basic Morita equivalences and a conjecture of Sasaki for cohomology of block algebras of finite groups
C. C. Todea
We show, using basic Morita equivalences between block algebras of finite groups, that the Conjecture of H. Sasaki from [9] is true for a new class of blocks called nilpotent cover…