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arXiv 2305.03166math.GN
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拓扑空间上的C-开集

C-open Sets on Topological Spaces

M. H. Alqahtani

AI总结:

该研究提出拓扑空间中C-开集与C-闭集的概念,探究其基本性质,定义相关算子并厘清关系,还给出了基于这类集合的连续映射与紧空间并考察其性质。

摘要:

拓扑空间(X, T)的一个开(相应地,闭)子集A,若满足cl(A) \ A(相应地,A \ int(A))为可数集,则称其为C-开(相应地,C-闭)集。本文旨在提出C-开集与C-闭集的概念。我们首先研究了它们的基本性质。随后,利用C-开集和C-闭集定义了内部、闭包、极限、边界、前沿等算子,并阐明和讨论了这些算子之间的关系。最后,我们展示了用C-开集和C-闭集定义的连续映射与紧空间,并详细考察了它们的主要性质。

英文摘要:

An open (resp., closed) subset A of a topological space (X, T ) is called C-open (resp., C-closed) set if cl(A) \ A (resp., A \ int(A)) is a countable set. This paper aims to present the concept of C-open and C-closed sets. We first investigate their basic properties. Then, we found some operators such as interior, closure, limit, border, and frontier using C-open and C-closed sets. The relationships between them are clarified and discussed. Finally, we exhibit continuous maps and compact space defined using C-open and C-closed sets and scrutinize their main properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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