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Compact groups in which all elements have countable right Engel sinks
Proceedings of the Royal Society of Edinburgh Section A: Mathematics ( IF 1.3 ) Pub Date : 2020-11-13 , DOI: 10.1017/prm.2020.81 E. I. Khukhro , P. Shumyatsky
Proceedings of the Royal Society of Edinburgh Section A: Mathematics ( IF 1.3 ) Pub Date : 2020-11-13 , DOI: 10.1017/prm.2020.81 E. I. Khukhro , P. Shumyatsky
A right Engel sink of an element g of a group G is a set ${\mathscr R}(g)$ such that for every x ∈ 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.
中文翻译:
所有元素都有可数右恩格尔汇的紧群
元素的右恩格尔汇G 一组的G 是一个集合${\mathscr R}(g)$ 这样对于每个X ∈G 所有足够长的换向器$[...[[g,x],x],\dots ,x]$ 属于${\mathscr R}(g)$ . (因此,G 正是当我们可以选择时,它是一个正确的恩格尔元素${\mathscr R}(g)=\{ 1\}$ .) 证明了如果紧(Hausdorff)群的每一个元素G 有一个可数右恩格尔槽,则G 有一个有限正规子群ñ 这样G /ñ 是局部幂零的。
更新日期:2020-11-13
中文翻译:
所有元素都有可数右恩格尔汇的紧群
元素的右恩格尔汇