2 papers
math.RA2026
The second Hochschild cohomology and deformations of Brauer graph algebras
Yuming Liu, Zhengfang Wang, Bohan Xing
In this paper, we give an explicit description about the second Hochschild cohomology groups of bipartite Brauer graph algebras with trivial grading. Based on this, we provide geom…
math.KT2026
-structures on the additive decomposition of the Tate-Hochschild cohomology of a finite group algebra
Xiuli Bian, Longfei Li, Yuming Liu +3
Firstly, for a finite group algebra, we provide a computational framework for the Tate-Hochschild cochain complex in terms of the additive decomposition, by decompo…