在数学的拓扑学中，闭映射是两个拓扑空间之间的映射，使得任何闭集的像都是闭集。所以f: X → Y是闭映射，如果X中的闭集在f下的像都为Y的闭集。
... abgeschlossen closed 结束的;完成的; abgeschlossene Abbildung closed map 闭映射 abgeschlossene Huelle closure 闭包 ...
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Theorem 3 closed mapping preserve the space with a- hereditarily closure-preserving pair-networks.
闭离散空间且除有限个a外，X。 是单点集.(定理2.2.7)定理3闭映射保持具有。
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本文的主要结果是证明有限到一的连续闭映射保持具有点可数型的空间。
In this paper it is shown that Spaces of pointwise countable type are preserved by fi-nite-to - one, continuous, closed mappings.
给出了强ps -不定开映射和强ps -不定闭映射的概念，并且讨论了它们的一些性质。
The concepts of strong PS-irresolute open mapping and strong PS-irresolute closed mapping are introduced in L-spaces and their properties are researched.
深化算子的开映射定理，对偶地定义了算子的闭映射与弱闭映射，并讨论了相关的若干性质。
Deepen the open mapping theorem, define the closed mapping and the weakly closed mapping under untithesis, and also discuss some of their related properties.
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