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arXiv 0907.0811math.RT
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Specht模的顶点与对称群的块

Vertices of Specht modules and blocks of the symmetric group

Mark Wildon

摘要:

本文研究了J. A. Green,关于对称群的Specht模。主要定理给出了对于每个不可分解的非投射Specht模,一个包含在它的一个顶点中的大子群。该定理的一个推论是确定对称群亏群的一种新方法。我们也用它来找到一个特定的家庭的简单的Specht模块的格林对应;作为一个推论,我们得到一个新的证明的Brauer对应块的对称群。主要定理的证明使用了M. Brou{é},连同使用Young tableaux的组合参数。

英文摘要:

This paper studies the vertices, in the sense defined by J. A. Green, of Specht modules for symmetric groups. The main theorem gives, for each indecomposable non-projective Specht module, a large subgroup contained in one of its vertices. A corollary of this theorem is a new way to determine the defect groups of symmetric groups. We also use it to find the Green correspondents of a particular family of simple Specht modules; as a corollary, we get a new proof of the Brauer correspondence for blocks of the symmetric group. The proof of the main theorem uses the Brauer homomorphism on modules, as developed by M. Brou{é}, together with combinatorial arguments using Young tableaux.

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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