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arXiv 1901.03372math.GR
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二面体2-群的幂子群覆盖

On Covers of Dihedral 2-Groups by Powerful Subgroups

Risto Atanasov, Adam Gregory, Luke Guatelli, Andrew Penland

摘要:

一个有限的$p$ -群$G$称为\textit{powerful},如果$p$是奇数且$[G,G]\subseteq G^p$或$p=2$且$[G,G]\subseteq G^4$ .组的{ \em{cover} }是其并集等于整个组的子组的集合。我们将讨论$p$ -群的强$p$ -子群的覆盖。$p$ -群被强$p$ -子群覆盖的最小覆盖的大小称为\textit{powerful covering number} .本文确定了二面体2-群的幂覆盖数。

英文摘要:

A finite $p$-group $G$ is called \textit{powerful} if either $p$ is odd and $[G,G]\subseteq G^p$ or $p=2$ and $[G,G]\subseteq G^4$. A {\em{cover}} for a group is a collection of subgroups whose union is equal to the entire group. We will discuss covers of $p$-groups by powerful $p$-subgroups. The size of the smallest cover of a $p$-group by powerful $p$-subgroups is called the \textit{powerful covering number}. In this paper we determine the powerful covering number of the dihedral 2-groups.

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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