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arXiv 1505.04468math.GR
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具有Engel-like条件的剩余有限群

On residually finite groups with Engel-like conditions

Raimundo Bastos

摘要:

设$m,n$为正整数。设$G$是一个剩余有限群,其中对于每个元素$x \in G$,存在一个正整数$q=q(x) \leqslant m$,使得$x^q$是$n$ -Engel.证明了$G$是局部虚幂零的.进一步,设$w$是多线性交换子,$G$是剩余有限群,其中对于至多$896$ $w$ -值$x$的每个乘积,存在正整数$q=q(x)$除以$m$,使得$x^q$是$n$ -Engel。则$w(G)$是局部虚幂零的.

英文摘要:

Let $m,n$ be positive integers. Suppose that $G$ is a residually finite group in which for every element $x \in G$ there exists a positive integer $q=q(x) \leqslant m$ such that $x^q$ is $n$-Engel. We show that $G$ is locally virtually nilpotent. Further, let $w$ be a multilinear commutator and $G$ a residually finite group in which for every product of at most $896$ $w$-values $x$ there exists a positive integer $q=q(x)$ dividing $m$ such that $x^q$ is $n$-Engel. Then $w(G)$ is locally virtually nilpotent.

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