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arXiv 2608.22195math.RA

弱Hopf Galois扩张的Hochschild上同调与AS-Gorenstein性质

Hochschild cohomology and AS-Gorenstein property of weak Hopf Galois extensions

  • Jining University(济宁学院)
  • Shandong Xiehe University(山东协和大学)
  • Qufu Normal University(曲阜师范大学)

机构由 AI 辅助整理,请以论文原文为准。

Daowei Lu, Dingguo Wang

AI总结:

本文针对具有双射反极的弱Hopf代数H,研究受限忠实平坦弱H-Galois扩张A/B的AS-Gorenstein性质,建立联系A与B的Hochschild上同调的谱序列,证明当A为诺特仿射PI代数、B为AS-Gorenstein时,A也具有该性质。

AI中文摘要:

设$H$为具有双射反极的弱Hopf代数。本文致力于研究受限忠实平坦弱$H$-Galois扩张$A/B$的AS-Gorenstein性质。我们首先研究弱$H$-Galois扩张的上同调,随后建立联系$A$与$B$的Hochschild上同调的谱序列。最后证明当$A$为诺特仿射PI代数且$B$为AS-Gorenstein时,$A$也具有AS-Gorenstein性质。

英文摘要:

Let $H$ be a weak Hopf algebra with bijective antipode. This paper is devoted to the AS-Gorenstein property of restricted faithfully flat weak $H$-Galois extensions $A/B$. We first of all study the cohomologies of weak $H$-Galois extensions and then establish the spectral sequence connecting the Hochschild cohomologies of $A$ and of $B$. Finally we prove that when $A$ is a noetherian affine PI algebra and $B$ is AS-Gorenstein, $A$ shares the AS-Gorenstein property.

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