Year: 2018
Author: Huaxi Chen, Jinrong Liang
Communications in Mathematical Research , Vol. 34 (2018), Iss. 2 : pp. 133–140
Abstract
Let $H$ be a finite-dimensional weak Hopf algebra over a field $k$ and $A$ an associative algebra, and $A\#_{\sigma}H$ a weak crossed product. In this paper, a spectral sequence for Ext is constructed which yields an estimate for cotorsion dimension of $A\#_{\sigma}H$ in terms of the corresponding data for $H$ and $A$.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.13447/j.1674-5647.2018.02.05
Communications in Mathematical Research , Vol. 34 (2018), Iss. 2 : pp. 133–140
Published online: 2018-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 8
Keywords: weak crossed product cotorsion dimension projective resolution