{ "id": "1908.03347", "version": "v1", "published": "2019-08-09T07:35:43.000Z", "updated": "2019-08-09T07:35:43.000Z", "title": "Thompson-like characterization of solubility for products of finite groups", "authors": [ "P. Hauck", "L. S. Kazarin", "A. Martínez-Pastor", "M. D. Pérez-Ramos" ], "categories": [ "math.GR" ], "abstract": "A remarkable result of Thompson states that a finite group is soluble if and only if its two-generated subgroups are soluble. This result has been generalized in numerous ways, and it is in the core of a wide area of research in the theory of groups, aiming for global properties of groups from local properties of two-generated (or more generally, $n$-generated) subgroups. We contribute an extension of Thompson's theorem from the perspective of factorized groups. More precisely, we study finite groups $G = AB$ with subgroups $A,\\ B$ such that $\\langle a, b\\rangle$ is soluble for all $a \\in A$ and $b \\in B$. In this case, the group $G$ is said to be an $\\cal S$-connected product of the subgroups $A$ and $B$ for the class $\\cal S$ of all finite soluble groups. Our main theorem states that $G = AB$ is $\\cal S$-connected if and only if $[A,B]$ is soluble. In the course of the proof we derive a result of own interest about independent primes regarding the soluble graph of almost simple groups.", "revisions": [ { "version": "v1", "updated": "2019-08-09T07:35:43.000Z" } ], "analyses": { "subjects": [ "20D40", "20D10" ], "keywords": [ "thompson-like characterization", "solubility", "main theorem states", "study finite groups", "thompsons theorem" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }