On S-cluster sets and S-closed spaces

A new type of cluster sets, called S-cluster sets, of functions and multifunctions between topological spaces is introduced, thereby providing a new technique for studying S-closed spaces. The deliberation includes an explicit expression of S-cluster set of a function. As an application, characteriz...

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Main Authors: M. N. Mukherjee, Atasi Debray
Format: Article
Language:English
Published: Hindawi Limited 2000-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S0161171200001277
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spelling doaj-dd8af2602f3d49ff8d66598a4c4395cc2020-11-24T22:47:12ZengHindawi LimitedInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252000-01-0123959760310.1155/S0161171200001277On S-cluster sets and S-closed spacesM. N. Mukherjee0Atasi Debray1Department of Pure Mathematics, University of Calcutta, 35, Ballygunge Circular Road, Calcutta 700 019, IndiaDepartment of Pure Mathematics, University of Calcutta, 35, Ballygunge Circular Road, Calcutta 700 019, IndiaA new type of cluster sets, called S-cluster sets, of functions and multifunctions between topological spaces is introduced, thereby providing a new technique for studying S-closed spaces. The deliberation includes an explicit expression of S-cluster set of a function. As an application, characterizations of Hausdorff and S-closed topological spaces are achieved via such cluster sets.http://dx.doi.org/10.1155/S0161171200001277S-cluster setS-closednessθs-closuresemi-open sets.
collection DOAJ
language English
format Article
sources DOAJ
author M. N. Mukherjee
Atasi Debray
spellingShingle M. N. Mukherjee
Atasi Debray
On S-cluster sets and S-closed spaces
International Journal of Mathematics and Mathematical Sciences
S-cluster set
S-closedness
θs-closure
semi-open sets.
author_facet M. N. Mukherjee
Atasi Debray
author_sort M. N. Mukherjee
title On S-cluster sets and S-closed spaces
title_short On S-cluster sets and S-closed spaces
title_full On S-cluster sets and S-closed spaces
title_fullStr On S-cluster sets and S-closed spaces
title_full_unstemmed On S-cluster sets and S-closed spaces
title_sort on s-cluster sets and s-closed spaces
publisher Hindawi Limited
series International Journal of Mathematics and Mathematical Sciences
issn 0161-1712
1687-0425
publishDate 2000-01-01
description A new type of cluster sets, called S-cluster sets, of functions and multifunctions between topological spaces is introduced, thereby providing a new technique for studying S-closed spaces. The deliberation includes an explicit expression of S-cluster set of a function. As an application, characterizations of Hausdorff and S-closed topological spaces are achieved via such cluster sets.
topic S-cluster set
S-closedness
θs-closure
semi-open sets.
url http://dx.doi.org/10.1155/S0161171200001277
work_keys_str_mv AT mnmukherjee onsclustersetsandsclosedspaces
AT atasidebray onsclustersetsandsclosedspaces
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