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arXiv 1005.3748math.GR
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p-可解群单模的权参数化

Weight parameterization of simple modules for p-solvable groups

Lluis Puig

摘要:

有限群G关于素数p的权是由Jon Alperin引入的,为了形成他著名的猜想,该猜想确认G的权的G-共轭类的数目与简单KG-模的同构类的数目一致,其中k是特征p的代数闭域。三十年前,奥山哲郎已经证明了在p-可解群类中这个猜想成立。在本文中,对于p-可解群,一方面,我们证明了一个自然的双射--即与G的外自同构群的作用相容--在单群G-模M的同构类集合和权(R,Y)的G-共轭类集合之间,直到选择一个极化。另一方面,我们确定了M的重模与Y的重模之间的关系。在附录中,我们证明了Gabriel Navarro为奇数阶群定义的双射与我们为特定的极化选择定义的双射一致。

英文摘要:

The weights for a finite group G with respect to a prime number p where introduced by Jon Alperin, in order to formulate his celebrated conjecture affirming that that the number of G-conjugacy classes of weights of G coincides with the number of isomorphism classes of simple kG-modules, where k is an algebraically closed field of characteristic p. Thirty years ago, Tetsuro Okuyama already proved that in the class of p-solvable groups this conjecture holds. In this paper, for the p-solvable groups, on the one hand we exhibit a natural bijection - namely compatible with the action of the group of outer automorphisms of G - between the sets of isomorphism classes of simple G-modules M and of G-conjugacy classes of weights (R,Y), up to the choice of a polarization. On the other hand, we determine the relationship between a multiplicity module of M and Y. In an Appendix, we show that the bijection defined by Gabriel Navarro for the groups of odd order coincides with our bijection for a particular choice of the polarization.

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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