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半群W(n,r)的极大(正则)子半群 被引量:4

M aximal( regular) subsemigroups of the semigroup W( n,r)
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摘要 设自然数n≥3,RWn是有限链[n]上的正则保序且压缩奇异变换半群。对任意的r(1≤r≤n-1),记W(n,r)={α∈RWn:|Im(α)|≤r}为半群RWn的双边理想。通过对秩为r的元素和格林关系的分析,获得了半群W(n,r)的极大(正则)子半群的完全分类。 Let RWn be the semigroup of all regular order-preserving and compressing singular transformations on a finite-chain[n] if n≥3, and let W(n,r) ={α∈ RWn : |Im(α) | ≤r} be the two-sided ideal of the semigroup RWn for an arbitrary integer r accord with 1 ≤ r≤n - 1. By analyzing the elements of rank r and Green's relations, the classification of the maximal (regular) subsemigroup of the semigroup W(n, r) is completely obtained.
作者 罗永贵 LUO Yong-gui(School of Mathematics Science, Guizhou Normal University, Guiyang 550001, Guizhou, China)
出处 《山东大学学报(理学版)》 CAS CSCD 北大核心 2017年第10期7-11,共5页 Journal of Shandong University(Natural Science)
基金 贵州省科学技术基金资助项目(黔科合LH字(2014)7056号)
关键词 保序 正则压缩 奇异变换半群 极大(正则)子半群 完全分类 order-preserving regular compression singular transformation semigroup maximal (regular) subsemigroup complete classification
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