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arXiv 1111.1837math.RTmath.QA
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Taft代数的Green环

The Green Rings of Taft algebras

Huixiang Chen, Fred Van Oystaeyen, Yinhuo Zhang

摘要:

我们计算Taft代数$H_n(q)$的Green环,其中$n$是大于1的正整数,$q$是$n$的单位根.证明了Taft代数$H_n(q)$的Green环$r(H_n(q))$是由两个元素服从递归定义的某种关系生成的交换环。给出了$n=2,3,..., 8$的具体实例。

英文摘要:

We compute the Green ring of the Taft algebra $H_n(q)$, where $n$ is a positive integer greater than 1, and $q$ is an $n$-th root of unity. It turns out that the Green ring $r(H_n(q))$ of the Taft algebra $H_n(q)$ is a commutative ring generated by two elements subject to certain relations defined recursively. Concrete examples for $n=2,3,..., 8$ are given.

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