s-regular closed set s正则闭集
regular opened closed set 正则开集
l-fuzzy regular open closed set lf正则开集
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Locany S-Closed Space is extremally disconnected if and only if every semi-regular S-closed set relative to X is Closed set.
本注记给出局部S-闭空间X是极不连通的充要条件是X中每个相对X是S-闭的半正则于集是闭集。
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