74,779 research outputs found
Batalin-Vilkovisky structure over the Hochschild cohomology ring of a group algebra
We realize explicitly the well-known additive decomposition of the Hochschild
cohomology ring of a group algebra in the elements level. As a result, we
describe the cup product, the Batalin-Vilkovisky operator and the Lie bracket
in the Hochschild cohomology ring of a group algebra.Comment: This paper uses a Maple program which is avaible at
http://math.bnu.edu.cn/~liuym
- …