English

Commutators between coprime order elements in non-abelian simple groups

Group Theory 2025-04-07 v2

Abstract

Recent investigations on the set of commutators between the elements of a finite group having relatively prime orders have prompt us to propose a variant of the Ore conjecture: For every finite non-abelian simple group and for every gGg\in G, there exist x,yGx,y\in G with g=[y,x]g=[y,x] and with the order of xx relatively prime to the order of yy. In this note we present some evidence towards the veracity of this conjecture by proving it for alternating groups and some sporadic simple groups.

Keywords

Cite

@article{arxiv.2504.02330,
  title  = {Commutators between coprime order elements in non-abelian simple groups},
  author = {Andrea Lucchini and Pablo Spiga},
  journal= {arXiv preprint arXiv:2504.02330},
  year   = {2025}
}

Comments

Our main result was already proved by Pavel Shumyatsky in 2015 "Commutators of elements of coprime orders in finite groups" Forum Math. 27 (2015), 575 - 583 DOI 10.1515/ forum-2012-0127

R2 v1 2026-06-28T22:44:51.952Z