$BV$-structure on Hochschild cohomology for exceptional local algebras of quaternion type. Case of even parameter

Alexander Generalov; Andrei V. Semenov

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BV-structure on Hochschild cohomology for exceptional local algebras of quaternion type. Case of even parameter

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arxiv 2109.01814 v3 pith:JA3RIVNG submitted 2021-09-04 math.KT

BV-structure on Hochschild cohomology for exceptional local algebras of quaternion type. Case of even parameter

Alexander Generalov , Andrei V. Semenov This is my paper

classification math.KT

keywords algebrascohomologyquaterniontypecaseevenexceptionalhochschild

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We give a full description of the $BV$-structure on the Hochschild cohomology of exceptional local algebras of quaternion type, defined by parameters $(k,0,d)$ in case of even parameter $k \geqslant 3$, according to Erdmann's classification. We develop and use the method of comparison morphisms and weak self-homotopy method. This article states as a generalization of similar results about $BV$-structures on Hochscild cohomology of algebras of quaternion type.

BV-structure on Hochschild cohomology for exceptional local algebras of quaternion type. Case of even parameter

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