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arXiv 2103.09719math.GR
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关于无穷秩的次正规子群与某个正规子群可交换的群

On groups in which subnormal subgroups of infinite rank are commensurable with some normal subgroup

Ulderico Dardano, Fausto De Mari

摘要:

研究了可解群G,其中每个具有无限秩的次正规子群H与一个正规子群可交换,即存在一个正规子群N使得H与N的交在H和N中都有有限指数.证明了如果G是周期的,则所有次正规子群都可与一个正规子群交换,只要G的Hirsch-Plotkin根具有无穷秩或G是幂零交换群(且具有无穷秩).

英文摘要:

We study soluble groups G in which each subnormal subgroup H with infinite rank is commensurable with a normal subgroup, i.e. there exists a normal subgroup N such that the intersection of H and N has finite index in both H and N. We show that if such a G is periodic, then all subnormal subgroups are commensurable with a normal subgroup, provided either the Hirsch-Plotkin radical of G has infinite rank or G is nilpotent-by-abelian (and has infinite rank).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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