Siberian Mathematical Journal ( IF 0.5 ) Pub Date : 2021-01-18 , DOI: 10.1134/s0037446620060099 A. S. Kondrat’ev
The Gruenberg–Kegel graph (the prime graph) of a finite group \( G \) is the graph whose vertices are the prime divisors of the order of \( G \) and two different vertices \( p \) and \( q \) are adjacent if and only if \( G \) contains an element of order \( pq \). We find all finite groups with the same Gruenberg–Kegel graph as \( S \) for each of the sporadic groups \( S \) isomorphic to \( HS \), \( J_{3} \), \( Suz \), \( O^{\prime}N \), \( Ly \), \( Th \), \( Fi_{23} \), or \( Fi_{24}^{\prime} \). In particular, we establish the recognition by the Gruenberg–Kegel graph for these eight groups \( S \).
中文翻译:
在识别零星简单组$ HS $,$ J_ {3} $,$ Suz $,$ O ^ {\ prime} N $,$ Ly $,$ Th $,$ Fi_ {23} $和$ Fi_之后{24} ^ {\ prime} $由Gruenberg–Kegel图
有限群\(G \)的Gruenberg–Kegel图(素数图) 是这样的图,其顶点是\(G \)阶的素数除数和两个不同的顶点\(p \)和\(q当且仅当\(G \)包含顺序为\(pq \)的元素时, \)才是相邻的。我们找到具有相同Gruenberg-凯格尔图作为所有有限群 \(S \) 对于每个散在群的 \(S \)同构 \(HS \) ,\(J_ {3} \) ,\(的Suz \ ),\(O ^ {\ prime} N \),\(Ly \),\(Th \),\(Fi_ {23} \)或\(Fi_ {24} ^ {\ prime} \)。特别是,我们通过Gruenberg–Kegel图建立了对这8个组\(S \)的识别 。