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一类变换半群的秩 被引量:48

The Rank of a Class of Transformation Semigroups
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摘要 设自然数n≥4,X_n={1,2,…,n},证明了X_n上的保序压缩全变换半群W_n的秩为n-1. Let n ≥ 4, and Xn={1,2,……,n}. In this paper, the rank of the semigroup Wn of the order-preserving and compressing transformations on Xn is proved to be n - 1
出处 《数学的实践与认识》 CSCD 北大核心 2010年第8期222-224,共3页 Mathematics in Practice and Theory
基金 贵州科技基金(黔基合计字(2004)3047) 贵州科技基金(黔基合计字LKS(2009)02)
关键词 保序 压缩 半群 order-preserving compression semigroup rank
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参考文献8

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