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math.RT2014
Two questions on stable equivalences of Morita type
Yuming Liu, Guodong Zhou, Alexander Zimmermann
It is well-known that derived equivalences preserve tensor products and trivial extensions. We disprove both constructions for stable equivalences of Morita type.
math.KT2014★ 4 cited
Batalin-Vilkovisky structure over the Hochschild cohomology ring of a group algebra
Yu-Ming Liu, Guodong Zhou
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, th…