Hochschild Cohomology of q-Schur Algebras
Hochschild Cohomology of q-Schur Algebras
复制标题
q-Schur 代数的 Hochschild 上同调
DOI:
10.1007/s10468-016-9653-0
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发表时间:
2017
影响因子:
0.6
通讯作者:
Mayu Tsukamoto
中科院分区:
文献类型:
--
作者:
Kurokawa Hiroyuki;Kurosawa Kosuke;Usui Tomohiro;林中貴宏;Mayu Tsukamoto
We compute the Hochschild cohomology of any block ofq-Schur algebras. We focus on the even part of this Hochschild cohomology ring. To compute the Hochschild cohomology ofq-Schur algebras, we prove the following two results: first, we construct two graded algebra surjections between the Hochschild cohomologies of quasi-hereditary algebras because allq-Schur algebras over a field are quasi-hereditary. Second, we give the graded algebra isomorphism of Hochschild cohomologies by using a certain derive equivalence.