引入覆盖空间，定义了其邻域、内部、闭包、测度等概念，研究了它们的性质。
In this paper covering space is introduced. The notions, neighborhood, interior, closure and measure, are defined, and the properties of them are studied.
通过对模糊拟阵的相关性、闭包算子和模糊闭集的研究，得到了模糊闭集和模糊闭包算子的几个重要性质。
Several important properties of fuzzy close sets and fuzzy closure operator are derived by analyzing and investigating relativity, closure operators and fuzzy close sets in the fuzzy matroids.
本文定义了模糊关系的自反闭包、对称闭包概念，同时给出了模糊关系的自反闭包、对称闭包的运算方法及性质。打破了在原有的模糊关系只有传递闭包的局面。
This paper gives a new concept of reflexive closure of fuzzy relation and symmetric closure of fuzzy relation, and also gives operation method and properties about it.
本文引入有向图的特征多项式、反图、对称闭包等概念。初步探讨它们与图的某些整体性质的关系。
In this paper, the concept of the characteristic polynomial, the converse graph, the symmetrical closure and others are defined.
本文引入有向图的特征多项式、反图、对称闭包等概念。初步探讨它们与图的某些整体性质的关系。
In this paper, the concept of the characteristic polynomial, the converse graph, the symmetrical closure and others are defined.
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