rc-continuous functions and functions with rc-strongly closed graph

The family of regular closed subsets of a topological space is used to introduce two concepts concerning a function f from a space X to a space Y. The first of them is the notion of f being rc-continuous. One of the established results states that a space Y is extremally disconnected if and only if...

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Main Author: Bassam Al-Nashef
Format: Article
Language:English
Published: Wiley 2003-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/S0161171203203410
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author Bassam Al-Nashef
author_facet Bassam Al-Nashef
author_sort Bassam Al-Nashef
collection DOAJ
description The family of regular closed subsets of a topological space is used to introduce two concepts concerning a function f from a space X to a space Y. The first of them is the notion of f being rc-continuous. One of the established results states that a space Y is extremally disconnected if and only if each continuous function from a space X to Y is rc-continuous. The second concept studied is the notion of a function f having an rc-strongly closed graph. Also one of the established results characterizes rc-compact spaces (≡S-closed spaces) in terms of functions that possess rc-strongly closed graph.
format Article
id doaj-art-9ff8a819fcb54281ba41288db5aac00d
institution OA Journals
issn 0161-1712
1687-0425
language English
publishDate 2003-01-01
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series International Journal of Mathematics and Mathematical Sciences
spelling doaj-art-9ff8a819fcb54281ba41288db5aac00d2025-08-20T02:20:42ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252003-01-012003724547455510.1155/S0161171203203410rc-continuous functions and functions with rc-strongly closed graphBassam Al-Nashef0Department of Mathematics, Faculty of Science, Yarmouk University, Irbid, JordanThe family of regular closed subsets of a topological space is used to introduce two concepts concerning a function f from a space X to a space Y. The first of them is the notion of f being rc-continuous. One of the established results states that a space Y is extremally disconnected if and only if each continuous function from a space X to Y is rc-continuous. The second concept studied is the notion of a function f having an rc-strongly closed graph. Also one of the established results characterizes rc-compact spaces (≡S-closed spaces) in terms of functions that possess rc-strongly closed graph.http://dx.doi.org/10.1155/S0161171203203410
spellingShingle Bassam Al-Nashef
rc-continuous functions and functions with rc-strongly closed graph
International Journal of Mathematics and Mathematical Sciences
title rc-continuous functions and functions with rc-strongly closed graph
title_full rc-continuous functions and functions with rc-strongly closed graph
title_fullStr rc-continuous functions and functions with rc-strongly closed graph
title_full_unstemmed rc-continuous functions and functions with rc-strongly closed graph
title_short rc-continuous functions and functions with rc-strongly closed graph
title_sort rc continuous functions and functions with rc strongly closed graph
url http://dx.doi.org/10.1155/S0161171203203410
work_keys_str_mv AT bassamalnashef rccontinuousfunctionsandfunctionswithrcstronglyclosedgraph