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Class-preserving Coleman automorphisms of finite groups whose Sylow 2-subgroups are semidihedral
Journal of Algebra and Its Applications ( IF 0.5 ) Pub Date : 2021-05-07 , DOI: 10.1142/s0219498822501663
Tao Zheng 1 , Xiuyun Guo 1
Affiliation  

In this paper, we mainly investigate the class-preserving Coleman automorphisms of finite groups whose Sylow 2-subgroups are semidihedral. We prove that if G is a finite solvable group with semidihedral Sylow 2-subgroups, then Outc(G)OutCol(G) is a 2-group and therefore G satisfies the normalizer property. As some applications of this result, we also investigate the normalizer property of the following groups: the groups whose Sylow 2-subgroups are semidihedral and Sylow subgroups of odd order are all cyclic, the groups G=NS with N a nilpotent normal subgroup and S a maximal class 2-group, and the wreath products G=HQ with H a group whose Sylow 2-subgroups are of maximal class with order 8 and Q a rational permutation group.



中文翻译:

Sylow 2-子群为半二面体的有限群的保类 Coleman 自同构

在本文中,我们主要研究了具有 Sylow 的有限群的保类 Coleman 自同构2-子群是半二面体的。我们证明如果G是具有半二面体 Sylow 的有限可解群2-子群,然后出去C(G)出去科尔(G)是一个2'-组,因此G满足归一化属性。作为该结果的一些应用,我们还研究了以下组的归一化属性:其 Sylow 的组2- 子群是半二面体,奇数阶的 Sylow 子群都是循环的,群G=ñ小号ñ一个幂零正态子群和小号一个最大的类2-组和花环产品G=HH一个团体,其 Sylow2- 子组是具有顺序的最大类8一个有理置换群。

更新日期:2021-05-07
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