{ "id": "1804.10513", "version": "v1", "published": "2018-04-25T21:19:21.000Z", "updated": "2018-04-25T21:19:21.000Z", "title": "2-Parts of real class sizes", "authors": [ "Hung P. Tong-Viet" ], "categories": [ "math.GR" ], "abstract": "We investigate the structure of finite groups whose non-central real class sizes have the same $2$-part. In particular, we prove that such groups are solvable and have $2$-length one. As a consequence, we show that a finite group is solvable if it has two real class sizes. This confirms a conjecture due to G. Navarro, L. Sanus and P. Tiep.", "revisions": [ { "version": "v1", "updated": "2018-04-25T21:19:21.000Z" } ], "analyses": { "subjects": [ "20E45", "20D10" ], "keywords": [ "finite group", "non-central real class sizes", "consequence", "conjecture" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }