{ "id": "math/0510306", "version": "v1", "published": "2005-10-14T15:15:19.000Z", "updated": "2005-10-14T15:15:19.000Z", "title": "Retrieving information about a group from its character degrees or its class sizes", "authors": [ "Sandro Mattarei" ], "comment": "9 pages, to be published in Proc. Amer. Math. Soc", "journal": "Proc. Amer. Math. Soc. 134 (2006), 2189-2195", "categories": [ "math.GR" ], "abstract": "We prove that a knowledge of the character degrees of a finite group G and of their multiplicities determines whether G has a Sylow p-subgroup as a direct factor. An analogous result based on a knowledge of the conjugacy class sizes was known. We prove variations of both results and discuss their similarities.", "revisions": [ { "version": "v1", "updated": "2005-10-14T15:15:19.000Z" } ], "analyses": { "subjects": [ "20C05", "20C15", "20E45" ], "keywords": [ "character degrees", "retrieving information", "conjugacy class sizes", "multiplicities determines", "finite group" ], "tags": [ "journal article" ], "publication": { "publisher": "AMS", "journal": "Proc. Amer. Math. Soc." }, "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2005math.....10306M" } } }