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arXiv 0708.2280math.GR
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元素与自同态象交换的非阿贝尔群的最小生成元数和最小阶

Minimal Number of Generators and Minimum Order of a Non-Abelian Group whose Elements Commute with Their Endomorphic Images

Alireza Abdollahi, A. Faghihi, A. Mohammadi Hassanabadi

摘要:

如果一个群中的每个元素都与它的自同态象交换,则称之为$E$ -群。如果$p$是一个素数,则一个$p$ -群$G$是一个$E$ -群,称为一个$pE$ -群.每个阿贝尔群显然是一个$E$ -群。证明了2-生成元$E$ -群是阿贝尔群,3-生成元$E$ -群是类至多为2的幂零群.证明了任意无限3-生成元$E$ -群是阿贝尔群.我们猜想每一个有限的3-生成元$E$ -群都是阿贝尔群.证明了非交换$pE$ -群的最小阶是$p^8$,对任意奇素数$p$,这个阶是$2^7$,对$p=2$ .其中的一些结果证明了一个类宽于类的$E$ -群。

英文摘要:

A group in which every element commutes with its endomorphic images is called an $E$-group. If $p$ is a prime number, a $p$-group $G$ which is an $E$-group is called a $pE$-group. Every abelian group is obviously an $E$-group. We prove that every 2-generator $E$-group is abelian and that all 3-generator $E$-groups are nilpotent of class at most 2. It is also proved that every infinite 3-generator $E$-group is abelian. We conjecture that every finite 3-generator $E$-group should be abelian. Moreover we show that the minimum order of a non-abelian $pE$-group is $p^8$ for any odd prime number $p$ and this order is $2^7$ for $p=2$. Some of these results are proved for a class wider than the class of $E$-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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