C. Todea

activity

20152021

collaborators

4 papers

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.RT2018

Fusions and Clifford extensions

Tiberiu Coconet, Andrei Marcus, Constantin-Cosmin Todea

We introduce $G ˉ$ -fusions of local pointed groups on a block extension $A = b O G$ , where $H$ is a normal subgroup of the finite group $G$ , $G ˉ = G / H$ , and $b$ is a $G$ …

math.RT2018

Block extensions, local categories, and basic Morita equivalences

Tiberiu Coconet, Andrei Marcus, Constantin-Cosmin Todea

Let $(K, O, k)$ be a $p$ -modular system with $k$ algebraically closed, let $b$ be a block of the normal subgroup $H$ of $G$ having defect pointed group $Q_{δ}$ in $…

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…