Compact groups with probabilistically central monothetic subgroups
Group Theory
2022-12-19 v3
Abstract
If is a closed subgroup of a compact group , the probability that randomly chosen pair of elements from and commute is denoted by . Say that a subgroup is -central in if for any in . Here denotes the monothetic subgroup generated by . Our main result is that if is -central in , then there is an -bounded number and a normal subgroup such that the index and the order of the commutator subgroup both are finite and -bounded. In particular, if is a compact group for which there is such that for any , then there is an -bounded number and a normal subgroup such that the index and the order of both are finite and -bounded.
Cite
@article{arxiv.2110.00049,
title = {Compact groups with probabilistically central monothetic subgroups},
author = {João Azevedo and Pavel Shumyatsky},
journal= {arXiv preprint arXiv:2110.00049},
year = {2022}
}
Comments
Changes following referee's suggestions. Final version, accepted in Israel J. of Math