{ "id": "2402.01072", "version": "v2", "published": "2023-12-26T09:45:39.000Z", "updated": "2024-02-06T02:42:08.000Z", "title": "The influence of weakly $SΦ$-supplemented subgroups on fusion systems of finite groups", "authors": [ "Shengmin Zhang", "Zhencai Shen" ], "comment": "This paper is not complete", "categories": [ "math.GR" ], "abstract": "Let $G$ be a finite group and $H$ be a subgroup of $G$. Then $H$ is called a weakly $S\\Phi$-supplemented subgroup of $G$, if there exists a subgroup $T$ of $G$ such that $G =HT$ and $H \\cap T \\leq \\Phi (H) H_{sG}$, where $H_{sG}$ denotes the subgroup of $H$ generated by all subgroups of $H$ which are $S$-permutable in $G$. Let $p$ be a prime, $S$ be a $p$-group and $\\mathcal{F}$ be a saturated fusion system over $S$. Then $\\mathcal{F}$ is said to be supersolvable, if there exists a series of $S$, namely $1 = S_0 \\leq S_1 \\leq \\cdots \\leq S_n = S$, such that $S_{i+1}/S_i$ is cyclic, $i=0,1,\\cdots, n-1$, $S_i$ is strongly $\\mathcal{F}$-closed, $i=0,1,\\cdots,n$. In this paper, we investigate the structure of fusion system $\\mathcal{F}_S (G)$ under the assumption that certain subgroups of $S$ are weakly $S\\Phi$-supplemented in $G$, and obtain several new characterizations of supersolvability of $\\mathcal{F}_S (G)$.", "revisions": [ { "version": "v2", "updated": "2024-02-06T02:42:08.000Z" } ], "analyses": { "subjects": [ "20D10", "20D15", "20D20" ], "keywords": [ "finite group", "supplemented subgroup", "saturated fusion system", "assumption" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }