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This article is cited in 10 scientific papers (total in 10 papers)
On the pronormality of subgroups of odd index in some extensions of finite groups
W. Guoa, N. V. Maslovabc, D. O. Revindea a University of Science and Technology of China, Hefei, P. R. China
b Krasovskii Institute of Mathematics and Mechanics, Ekaterinburg, Russia
c Ural Federal University, Ekaterinburg, Russia
d Sobolev Institute of Mathematics, Novosibirsk, Russia
e Novosibirsk State University, Novosibirsk, Russia
Abstract:
We study finite groups with the following property $(*)$: All subgroups of odd index are pronormal. Suppose that $G$ has a normal subgroup $A$ with property $(*)$, and the Sylow $2$-subgroups of $G/A$ are self-normalizing. We prove that $G$ has property $(*)$ if and only if so does $N_G(T)/T$, where $T$ is a Sylow $2$-subgroup of $A$. This leads to a few results that can be used for the classification of finite simple groups with property $(*)$.
Keywords:
finite group, pronormal subgroup, Sylow $2$-subgroup, subgroup of odd index, wreath product, direct product, self-normalizing subgroup, simple group, symplectic group.
Received: 11.10.2017
Citation:
W. Guo, N. V. Maslova, D. O. Revin, “On the pronormality of subgroups of odd index in some extensions of finite groups”, Sibirsk. Mat. Zh., 59:4 (2018), 773–790; Siberian Math. J., 59:4 (2018), 610–622
Linking options:
https://www.mathnet.ru/eng/smj3009 https://www.mathnet.ru/eng/smj/v59/i4/p773
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