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arXiv 1208.2280math.RAmath.QA
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维数为$p^2$的连通霍普夫代数

Connected Hopf Algebras of Dimension $p^2$

Xingting Wang

摘要:

设$H$是特征为$p>0$的代数闭域$\field$上的有限维连通Hopf代数.给出了相应的分次Hopf代数$\gr H$的代数结构.然后研究了$H$由一个Hopf子代数$K$和另一个元素生成的情形以及$H$是余交换的情形.当$H$是限制泛包络代数时,给出了系数在平凡$H$ -双余代数$\field$中的余代数$H$的Hochschild上同调第二项的一个特殊基.最后,我们对$\field$上维数为$p^2$的连通霍普夫代数进行了分类.

英文摘要:

Let $H$ be a finite-dimensional connected Hopf algebra over an algebraically closed field $\field$ of characteristic $p>0$. We provide the algebra structure of the associated graded Hopf algebra $\gr H$. Then, we study the case when $H$ is generated by a Hopf subalgebra $K$ and another element and the case when $H$ is cocommutative. When $H$ is a restricted universal enveloping algebra, we give a specific basis for the second term of the Hochschild cohomology of the coalgebra $H$ with coefficients in the trivial $H$-bicomodule $\field$. Finally, we classify all connected Hopf algebras of dimension $p^2$ over $\field$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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