英德
有道
百度
谷歌
图片
维基
百科
拓扑闭集 [tuò pū bì jí]
topologically closed set
- 文摘:在L-拓扑空间给出了强拟半开集和强拟半闭集的概念,并且讨论了它们的一些性质.
Abstract: In this paper, the strong pre-semiopen L-sets and strong pre-semiclosed L -sets are introduced in L-top-ological spaces and their properties are researched. - 摘要本文研究粗糙集与拓扑空间的关系，统一地使用拓扑空间中的集合关于子基的内部和闭包来研究粗糙集理论和覆盖广义粗糙集理论中的下近似集和上近似集，以及由它们导出的关于子基的开集，导集，闭集，边界。
We study the relationships between the rough sets and the topological space, define the interior operator and the closure operator generated by a subbase of a topological space, which are conjugated with a lower approximation and an upper approximation, and obtain their basic properties.
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