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arXiv 2101.05720math.GR
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关于具有幂子群的有限$p$ -群

On finite $p$-groups with powerful subgroups

James Williams

摘要:

本文研究了有限$p$ -群的结构,并证明了指数$p^i$的每个子群对某些$i$都是幂群.对于奇素数$p$,我们证明了在一定条件下这些群必是幂群.然后,受Mann问题的启发,我们详细研究了所有极大子群都是幂子群的情形。我们发现,对于奇$p$任何有限$p$ -组$G$与所有的极大子群强大的有一个经常的权力结构-只有一个例外的情况下,这是一个$3$ -组的最大类和顺序$81$。为了证明这个反例是唯一的,我们使用了计算方法。我们简要地讨论了情况$p=2$和一些概括。

英文摘要:

In this paper we investigate the structure of finite $p$-groups with the property that every subgroup of index $p^i$ is powerful for some $i$. For odd primes $p$, we show that under certain conditions these groups must be potent. Then, motivated by a question of Mann, we investigate in detail the case when all maximal subgroups are powerful. We show that for odd $p$ any finite $p$-group $G$ with all maximal subgroups powerful has a regular power structure - with precisely one exceptional case which is a $3$-group of maximal class and order $81$. To show this counterexample is unique we use a computational approach. We briefly discuss the case $p=2$ and some generalisations.

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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