On sigma-semipermutable Subgroups of Finite Groups

On sigma-semipermutable Subgroups of Finite Groups
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关于有限群的 sigma 半置换子群

DOI:
10.1007/s10114-018-6428-z
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发表时间:
2018
影响因子:
0.7
通讯作者:
er N.
er N.
中科院分区:
数学3区
文献类型:
--
作者:
Guo Wen Bin;Skiba Alex;er N.

文献摘要

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令σ= {σi|i∈i}是所有素数的集合的某个划分,Ga有限群,σ(G) = {σi|σi∩π(G)≠∅}。对于某个σi∈σ, G的一个Hallσi-子群中的每个成员≠1,并且对于每个σi∈σ(G), G的一个Hallσi-子群恰好包含一个Hallσi-子群。在G中,对于HifHHix, σ-半可变=HixHfor allx∈Gand allHi∈h使得(|H|, |Hi|) = 1;关于g的完备的hall σ-集的σ-半可置换。在假定gare - σ-半置换inG的某些子群的基础上,研究了gbe的结构。
Letσ= {σi|i∈I} be some partition of the set of all primes ℙ,Ga finite group andσ(G) = {σi|σi∩π(G) ≠ ∅}. A setHof subgroups ofGis said to be acomplete Hall σ-setofGif every member ≠ 1 ofHis a Hallσi-subgroup ofGfor someσi∈σandHcontains exactly one Hallσi-subgroup ofGfor everyσi∈σ(G). A subgroupHofGis said to be:σ-semipermutable in G with respect to HifHHix=HixHfor allx∈Gand allHi∈Hsuch that (|H|, |Hi|) = 1;σ-semipermutable in GifHisσ-semipermutable inGwith respect to some complete Hallσ-set ofG. We study the structure ofGbeing based on the assumption that some subgroups ofGareσ-semipermutable inG.