Almost Engel finite and profinite groups
Group Theory
2016-06-02 v2
Abstract
Let be an element of a group . For a positive integer , let be the subgroup generated by all commutators over , where is repeated times. We prove that if is a profinite group such that for every there is such that is finite, then has a finite normal subgroup such that is locally nilpotent. The proof uses the Wilson--Zelmanov theorem saying that Engel profinite groups are locally nilpotent. In the case of a finite group , we prove that if, for some , for all , then the order of the nilpotent residual is bounded in terms of .
Cite
@article{arxiv.1512.06097,
title = {Almost Engel finite and profinite groups},
author = {E. I. Khukhro and P. Shumyatsky},
journal= {arXiv preprint arXiv:1512.06097},
year = {2016}
}
Comments
Minor corrections implemented