The probability of commuting subgroups in arbitrary lattices of subgroups
Publish place: International Journal of Group Theory، Vol: 10، Issue: 3
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_THEGR-10-3_003
تاریخ نمایه سازی: 14 اردیبهشت 1400
Abstract:
A finite group $G$, in which two randomly chosen subgroups $H$ and $K$ commute, has been classified by Iwasawa in ۱۹۴۱. It is possible to define a probabilistic notion, which ``measures the distance'' of $G$ from the groups of Iwasawa. Here we introduce the generalized subgroup commutativity degree $gsd(G)$ for two arbitrary sublattices $\mathrm{S}(G)$ and $\mathrm{T}(G)$ of the lattice of subgroups $\mathrm{L}(G)$ of $G$. Upper and lower bounds for $gsd(G)$ are shown and we study the behaviour of $gsd(G)$ with respect to subgroups and quotients, showing new numerical restrictions.
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Authors
Seid Kassaw Muhie
Department of Mathematics and Applied Mathematics, University of Cape Town, Private Bag X۱, Rondebosch, ۷۷۰۱, Cape Town, South Africa
Francesco G. Russo
Department of Mathematics and Applied Mathematics, University of Cape Town, Private Bag X۱, Rondebosch, ۷۷۰۱, Cape Town, South Africa