ii- Open Set in Bitopological Spaces

<strong>     </strong>In this paper, we define <em>ii</em>-open set in bitopological space as follows: Let <em>(</em> <em>, </em> <em> , </em> <em>) </em>be a bitopological space, a subset <em>A</em> of <strong>...

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Main Authors: Beyda Abdullah, Amir Mohammed
Format: Article
Language:English
Published: Mosul University 2020-12-01
Series:Al-Rafidain Journal of Computer Sciences and Mathematics
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Online Access:https://csmj.mosuljournals.com/article_167336_038cf68f299f11f1aafc4b080d2747cc.pdf
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author Beyda Abdullah
Amir Mohammed
author_facet Beyda Abdullah
Amir Mohammed
author_sort Beyda Abdullah
collection DOAJ
description <strong>     </strong>In this paper, we define <em>ii</em>-open set in bitopological space as follows: Let <em>(</em> <em>, </em> <em> , </em> <em>) </em>be a bitopological space, a subset <em>A</em> of <strong> </strong>is   said to be ( <em>– ii-</em> open set )  if there exist  <em>U,V ≠</em> and    <em>U,V </em> <em>   </em>such that: <em>A=int<sup>1</sup>(U)                          or            A=int<sup>2</sup> (V) </em> <em>A</em> <em>                or      A</em>       We study some characterizations and properties of this class.  Also, we explain the relation between <em>ii</em>- open sets and open sets, <em>i</em>-open sets and <em>α</em>-open sets in bitopological space. Furthermore, we define<em> ii-</em> continuous mapping on bitopological spaces with some properties.
format Article
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issn 1815-4816
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publishDate 2020-12-01
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record_format Article
series Al-Rafidain Journal of Computer Sciences and Mathematics
spelling doaj-art-8e94871dd368423e89ec7039a5959c8d2025-08-20T02:28:00ZengMosul UniversityAl-Rafidain Journal of Computer Sciences and Mathematics1815-48162311-79902020-12-01142333910.33899/csmj.2020.167336167336ii- Open Set in Bitopological SpacesBeyda Abdullah0Amir Mohammed1Department of Mathematics, College of Education for Pure Sciences, University of Mosul, Mosul, Iraq.Department of Mathematics College of Education University of Mosul, Mosul, Iraq<strong>     </strong>In this paper, we define <em>ii</em>-open set in bitopological space as follows: Let <em>(</em> <em>, </em> <em> , </em> <em>) </em>be a bitopological space, a subset <em>A</em> of <strong> </strong>is   said to be ( <em>– ii-</em> open set )  if there exist  <em>U,V ≠</em> and    <em>U,V </em> <em>   </em>such that: <em>A=int<sup>1</sup>(U)                          or            A=int<sup>2</sup> (V) </em> <em>A</em> <em>                or      A</em>       We study some characterizations and properties of this class.  Also, we explain the relation between <em>ii</em>- open sets and open sets, <em>i</em>-open sets and <em>α</em>-open sets in bitopological space. Furthermore, we define<em> ii-</em> continuous mapping on bitopological spaces with some properties.https://csmj.mosuljournals.com/article_167336_038cf68f299f11f1aafc4b080d2747cc.pdfα- open seti- open setii- open setbitopological space
spellingShingle Beyda Abdullah
Amir Mohammed
ii- Open Set in Bitopological Spaces
Al-Rafidain Journal of Computer Sciences and Mathematics
α- open set
i- open set
ii- open set
bitopological space
title ii- Open Set in Bitopological Spaces
title_full ii- Open Set in Bitopological Spaces
title_fullStr ii- Open Set in Bitopological Spaces
title_full_unstemmed ii- Open Set in Bitopological Spaces
title_short ii- Open Set in Bitopological Spaces
title_sort ii open set in bitopological spaces
topic α- open set
i- open set
ii- open set
bitopological space
url https://csmj.mosuljournals.com/article_167336_038cf68f299f11f1aafc4b080d2747cc.pdf
work_keys_str_mv AT beydaabdullah iiopensetinbitopologicalspaces
AT amirmohammed iiopensetinbitopologicalspaces