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Rough Sets in Ordered Semigroups
Author(s): 
Pages: 1-4
Year: Issue:  3
Journal: JOURNAL OF WUYI UNIVERSITY(NATURAL SCIENCE EDITION)

Keyword:  粗糙集序半群同余理想;
Abstract: 介绍了序半群中粗糙集的概念,这个概念是一般半群中子集的拓广. 对给定的一个子集,给出了一个序半群的正则同余的关于该子集上下近似的定义,讨论了一些子集的运算和上下近似算子之间的关系,特别是当该子集是理想(左、右理想)时,他们的上下近似也是理想.
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