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A New Lower Approximation Operator in Fuzzy Approximation Spaces
Author(s): 
Pages: 19-24
Year: Issue:  2
Journal: JOURNAL OF WUYI UNIVERSITY(NATURAL SCIENCE EDITION)

Keyword:  β算子模糊集模糊近似空间下近似粗糙模糊集;
Abstract: 首先对β算子进行了研究,得到了2个结果,并将β算子扩展为2个矩阵之间的β运算.然后依据β算子及所得结果,给出了模糊近似空间中模糊集下近似的一种解析式定义,并刻画了新定义下的粗糙模糊集的基本性质.最后与刘贵龙的定义进行对比分析,举例说明刘的文章中关于截集的一个结果是错误的,并说明新的下近似算子具有一定的优越性.
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