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The equivalence relation is the basic Concept of the rough set theory.
等价关系是粗集理论中的一个重要概念。
youdao
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In point set topological theory, open set and neighborhood are the basic concept.
在点集拓扑理论中，开集、域等是最基本的概念。
youdao
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In point set topological theory, open set and neighborhood are the basic concept.
在点集拓扑理论中，开集、域等是最基本的概念。
youdao