{ "id": "1608.03224", "version": "v1", "published": "2016-08-10T16:11:33.000Z", "updated": "2016-08-10T16:11:33.000Z", "title": "On weakly $sigma$-permutable subgroups of finite groups", "authors": [ "Chi Zhang", "Zhenfeng Wu", "W. Guo" ], "categories": [ "math.GR" ], "abstract": "Let G be a finite group and {\\sigma} = {{\\sigma}_i, i \\in I} be a partition of the set of all primes \\mathbb{P}. A set \\mathcal{H} of subgroups of G with 1 \\in \\mathcal{H} is said to be a complete Hall {\\sigma}-set of G if every non-identity member of \\mathcal{H} is a Hall {\\sigma}_i-subgroup of G. A subgroup H of G is said to be {\\sigma}-permutable if G possesses a complete Hall {\\sigma}-set \\mathcal{H} such that HA^x = A^xH for all A \\in \\mathcal{H} and all x \\in G. We say that a subgroup H of G is weakly {\\sigma}-permutable in G if there exists a {\\sigma}-subnormal subgroup T of G such that G = HT and H \\cap T \\leq H_{\\sigma}G. where H_{\\sigma}G is the subgroup of H generated by all those subgroups of H which are {\\sigma}-permutable in G. By using this new notion, we establish some new criterias for a group G to be a {\\sigma}-soluble and supersoluble, and also we give the conditions under which a normal subgroup of G is hypercyclically embedded.", "revisions": [ { "version": "v1", "updated": "2016-08-10T16:11:33.000Z" } ], "analyses": { "keywords": [ "finite group", "permutable subgroups", "complete hall", "normal subgroup", "non-identity member" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }