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arXiv 1111.5811math.RT
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$SL_3$的模不可约表示的张量积分解:$p \geq 5$情形

Decomposition of Tensor Products of Modular Irreducible Representations for $SL_3$: the $p \geq 5$ case

C. Bowman, S. R. Doty, S. Martin

摘要:

本文研究了两个限制性简单$SL_3(K)$-模的张量积的不可分解直和项的结构,其中$K$是特征$p \geq 5$的代数闭域。我们给出了一个无特征算法的计算这样的张量积分解成不可分解的模块。在作者的早期论文中研究了$\SL_3(K)$的$p<5$情况。在本文中,我们表明,为特点$p\geq 5$所有的不可分解的和是刚性的,在对比的情况下,在特点3。

英文摘要:

We study the structure of the indecomposable direct summands of tensor products of two restricted simple $SL_3(K)$-modules, where $K$ is an algebraically closed field of characteristic $p \geq 5$. We give a characteristic-free algorithm for the computation of the decomposition of such a tensor product into indecomposable modules. The $p<5$ case for $\SL_3(K)$ was studied in the authors' earlier paper. In this paper we show that for characteristics $p\geq 5$ all the indecomposable summands are rigid, in contrast to the situation in characteristic 3.

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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