Thursday, September 13, 15.15, 7.527

Yuming Liu (Beijing),
The Batalin-Vilkovisky structure over the Hochschild cohomology ring of a group algebra.

Abstract:
Based on an explicit realization of the well-known additive decomposition, we describe the cup product, the Batalin-Vilkovisky operator and the Lie bracket in the Hochschild cohomology ring of a group algebra.