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fji he lie de ji xian
Author(s): 
Pages: 76
Year: Issue:  1
Journal: Zigong Teachers College Journal

Keyword:  F集极限上限集下限集Fuzzy集合存在性定理实变函数论并运算极限集列单;
Abstract: <正>本文在Fuzzy集合(下简称F集合)和其交、并运算的定义的基础上,给出了F集合列的极限的意义,也给出了它的一个存在性定理.定义1设A,A1…An…是任意一列F集称F集为这一列F集的上限集,记作而称F集为这一列F集的下限集,记作(?)An定义2 如果F集列{AN:n∈N}的上限集和下限集相等:
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