Version 4 2024-03-12, 19:01Version 4 2024-03-12, 19:01
Version 3 2023-10-29, 15:45Version 3 2023-10-29, 15:45
journal contribution
posted on 2024-03-12, 19:01authored byEvgeny 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