Hochschild Cohomology of q-Schur Algebras

Hochschild Cohomology of q-Schur Algebras
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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
Mayu Tsukamoto
中科院分区:
数学4区
文献类型:
--
作者:
Kurokawa Hiroyuki;Kurosawa Kosuke;Usui Tomohiro;林中貴宏;Mayu Tsukamoto

文献摘要

相似文献

我们计算了任意q- schur代数块的Hochschild上同调。我们关注这个Hochschild上同环的偶部。为了计算q- schur代数的Hochschild上同调,我们证明了以下两个结果:首先,由于一个域上的所有q- schur代数都是拟遗传的,我们在拟遗传代数的Hochschild上同调之间构造了两个梯度代数上射。其次,利用一定的推导等价,给出了Hochschild上同构的阶代数同构。
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.