@Article{CMR-34-133,
author = {Chen , Huaxi and Liang , Jinrong},
title = {Cotorsion Dimension of Weak Crossed Products},
journal = {Communications in Mathematical Research },
year = {2019},
volume = {34},
number = {2},
pages = {133--140},
abstract = {<p style="text-align: justify;">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 $A$.</p>},
issn = {2707-8523},
doi = {https://doi.org/10.13447/j.1674-5647.2018.02.05},
url = {http://global-sci.org/intro/article_detail/cmr/13519.html}
}