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arXiv 1503.02734math.RAmath.RT
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正规超字理论

Normal Supercharacter Theory

Farid Aliniaeifard

摘要:

群$ G $的超特征标理论主要有两种构造。第一个是由Diaconis和Isaacs定义的,来自于一个群$A$通过我们给定的群$G$上的自同构的作用。第二种是Hendrickson定义的,它将$G$的正规子群$N$的超特征标理论与$G/N$的超特征标理论相结合。本文从$G$的任意正规子群集构造了一个超特征标理论。我们证明了当考虑G的所有正规子群的集合时,相应的超特征标理论与由中心幂等元上的某些值给出的$G$的一个划分有关.同时,我们证明了我们所构造的超特征标理论不能通过自同构或单个正规子群得到。

英文摘要:

There are two main constructions of supercharacter theories for a group $ G $. The first, defined by Diaconis and Isaacs, comes from the action of a group $A$ via automorphisms on our given group $G$. The second, defined by Hendrickson, is combining a supercharacter theories of a normal subgroup $N$ of $G$ with a supercharacter theory of $G/N$. In this paper we construct a supercharacter theory from an arbitrary set of normal subgroups of $G$. We show that when consider the set of all normal subgroups of G, the corresponding supercharacter theory is related to a partition of $G$ given by certain values on the central idempotents. Also, we show the supercharacter theories that we construct can not be obtained via automorphisms or a single normal subgroup.

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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