{ "id": "1205.0643", "version": "v1", "published": "2012-05-03T08:14:01.000Z", "updated": "2012-05-03T08:14:01.000Z", "title": "On solubility of groups with finitely many centralizers", "authors": [ "Mohammad Zarrin" ], "comment": "to appear in Bulletin of the Iranian Mathematical Society", "categories": [ "math.GR" ], "abstract": "For any group G, let C(G) denote the set of centralizers of G. We say that a group G has n centralizers (G is a Cn-group) if |C(G)| = n. In this note, we prove that every finite Cn-group with n ? 21 is soluble and this estimate is sharp. Moreover, we prove that every finite Cn-group with |G| < 30n+15 19 is non-nilpotent soluble. This result gives a partial answer to a conjecture raised by A. Ashrafi in 2000.", "revisions": [ { "version": "v1", "updated": "2012-05-03T08:14:01.000Z" } ], "analyses": { "keywords": [ "centralizers", "finite cn-group", "solubility", "partial answer" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1205.0643Z" } } }