The Green Ring of Drinfeld Double D(H4)

The Green Ring of Drinfeld Double D(H4)
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DOI:
10.1007/s10468-013-9456-5
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发表时间:
2012-09
影响因子:
0.6
通讯作者:
Hui-xiang Chen
Hui-xiang Chen
中科院分区:
数学4区
文献类型:
--
作者:
Hui-xiang Chen

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本文研究了Sweedler四维Hopf代数H ~ 4的Drinfeld量子偶D(H ~ 4)的绿色环(或表示环).首先给出了有限维不可分解模的张量积到D(H ~ 4)上不可分解模的直和的分解。然后我们描述了D(H4)的绿色环r(D(H4))的结构,并证明r(D(H4))作为环是由服从一族关系的无限多个元素生成的。
In this paper, we study the Green ring (or the representation ring) of Drinfeld quantum doubleD(H4) of Sweedler’s four-dimensional Hopf algebraH4. We first give the decompositions of the tensor products of finite dimensional indecomposable modules into the direct sum of indecomposable modules overD(H4). Then we describe the structure of the Green ringr(D(H4)) ofD(H4) and show thatr(D(H4)) is generated, as a ring, by infinitely many elements subject to a family of relations.