Profinite groups with restricted centralizers of $\pi$-elements
Group Theory
2021-12-30 v2
Abstract
A group is said to have restricted centralizers if for each in the centralizer either is finite or has finite index in . Shalev showed that a profinite group with restricted centralizers is virtually abelian. Given a set of primes , we take interest in profinite groups with restricted centralizers of -elements. It is shown that such a profinite group has an open subgroup of the form , where is an abelian pro- subgroup and is a pro- subgroup. This significantly strengthens a result from our earlier paper.
Cite
@article{arxiv.2107.00491,
title = {Profinite groups with restricted centralizers of $\pi$-elements},
author = {Cristina Acciarri and Pavel Shumyatsky},
journal= {arXiv preprint arXiv:2107.00491},
year = {2021}
}
Comments
final version, some typos corrected, some references updated. arXiv admin note: text overlap with arXiv:2003.09933