The structure of connected (graded) Hopf algebras revisited

The structure of connected (graded) Hopf algebras revisited
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重温连通(分级)Hopf 代数的结构

DOI:
10.1016/j.jalgebra.2022.07.031
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发表时间:
2021-09
期刊:
影响因子:
0.9
通讯作者:
G.-S. Zhou
G.-S. Zhou
中科院分区:
数学3区
文献类型:
--
作者:
C. C. Li;G.-S. Zhou

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设H是特征为零的域上的连通分次Hopf代数,K是H的任意分次Hopf子代数.我们发现,有一个家庭的齐次元素的$H$和一个全阶的指标集,满足几个理想的条件,这揭示了一些有趣的连接之间的$H$和$K$。作为其结果之一,我们看到,$H$是一个分次迭代的霍普夫-奥尔扩张的$K$的导子类型,只要$H$是有限的Gelfand-Kirillov维数。这项工作的主要工具是林登的话,沿着陆,沉和第二个命名的作者在[24]中开发的想法。
Let $H$ be a connected graded Hopf algebra over a field of characteristic zero and $K$ an arbitrary graded Hopf subalgebra of $H$. We show that there is a family of homogeneous elements of $H$ and a total order on the index set that satisfy several desirable conditions, which reveal some interesting connections between $H$ and $K$. As one of its consequences, we see that $H$ is a graded iterated Hopf Ore extension of $K$ of derivation type provided that $H$ is of finite Gelfand-Kirillov dimension. The main tool of this work is Lyndon words, along the idea developed by Lu, Shen and the second-named author in [24.
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