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Compact groups in which all elements have countable right Engel sinks

Version 4 2024-03-12, 19:01
Version 3 2023-10-29, 15:45
journal contribution
posted on 2024-03-12, 19:01 authored by Evgeny Khukhro, Pavel Shumyatsky
<p>A right Engel sink of an element $g$ of a group $G$ is a set ${\mathscr R}(g)$ such that for every $x\in G$ all sufficiently long commutators $[...[[g,x],x],\dots ,x]$ belong to ${\mathscr R}(g)$. (Thus, $g$ is a right Engel element precisely when we can choose ${\mathscr R}(g)=\{ 1\}$.) It is proved that if every element of a compact (Hausdorff) group $G$ has a countable right Engel sink, then $G$ has a finite normal subgroup $N$ such that $G/N$ is locally nilpotent.</p>

History

School affiliated with

  • School of Mathematics and Physics (Research Outputs)

Publication Title

Proceedings of the Royal Society of Edinburgh Section A: Mathematics

Publisher

Cambridge University Press

ISSN

0308-2105

Date Submitted

2020-11-17

Date Accepted

2020-10-13

Date of First Publication

2020-11-13

Date of Final Publication

2020-12-31

Date Document First Uploaded

2020-10-13

ePrints ID

42617

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