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

Abstract

This is the second paper in the cycle of articles about $BV$-structure on Hochshild cohomology of exceptional algebras of quaternion type. We give $BV$-structure's full description in the case of quaternion algebras $R(k,0,d)$, defined by parameter $k = 2$ according to Erdmann classification.