Results 111 to 120 of about 529 (158)

Generalizations of Lindelöf Properties in Bitopological Spaces [PDF]

open access: yes, 2008
A bitopological space (X, τ 1, τ 2) is a set X together with two (arbitrary) topologies τ 1 and τ 2 defined on X. The first significant investigation into bitopological spaces was launched by J. C. Kelly in 1963.
Salleh, Zabidin
core  

A note on pairwise continuous mappings and bitopological spaces [PDF]

open access: yes, 2009
We continue the study of bitopological separation axioms that was begun by Kelly and obtain some results. Furthermore, we introduce a concept of pairwise Lindelöf bitopological spaces, namely, p 2 -Lindelöf spaces, and their properties are established ...
Kilicman, Adem, Salleh, Zabidin
core  

On A Bitopological (1,2)*- Proper Functions

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
   In this paper, we introduce a new type of functions in bitopological spaces, namely, (1,2)*-proper functions. Also, we study the basic properties and characterizations of these functions . One of the most important of equivalent definitions to the (1,
Sabiha I . Mahmood
doaj  

Near w-continuous multifunctions on bitopological spaces

open access: yes, 2019
In this paper, we introduce and study basic characterizations, several properties of upper (lower) nearly (i, j)-w-continuous multifunctions on bitopological space.Estadística Aplicada y OptimizaciónMatemáticas aplicadasMateriales y EntornoQuímica y ...
Rosas, Ennis   +3 more
core   +1 more source

Types of Generalized $\delta$-Open Sets in Bitopological Spaces [PDF]

open access: yes, 2019
In theoretical and applied areas of mathematics, one can work with sets endowed with several structures. A bitopological space is a set equipped with two topologies.
İlkhan, Merve
core  

Convexity in quasi-metric spaces

open access: yes, 2012
Includes abstract.Includes bibliographical references.The principal aim of this thesis is to investigate the existence of an injective hull in the categories of T-quasi-metric spaces and of T-ultra-quasi-metric spaces with nonexpansive ...
Otafudu, Olivier Olela
core  

Fuzzy $m$-structures $m$-open multifunctions and bitopological spaces

open access: yes, 2018
In this paper we study different weak forms of open multifunctionsfrom a fuzzy topological space into a fuzzy $m$-space. Further we study the same from a fuzzy bitopological space into a fuzzy bitopological spaces.
Binod Chandra Tripathy, Shyamal Debnath
core   +1 more source

L- compact Spaces

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2016
  The purpose of this paper is to study a new types of compactness in bitopological spaces. We shall introduce the concepts of  L- compactness.
S. Gedaan
doaj  

L- pre-open and L-semi-p-open Sets

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
   The purpose of this paper is to study   new  types of open sets in bitopological spaces.
S. G. Gasim
doaj  

r-τ12-θ-GENERALIZED FUZZY CLOSED SETS IN SMOOTH BITOPOLOGICAL SPACES

open access: yesJournal of New Theory, 2015
− In [34] we introduced the notion of r-(τi, τj)-θ-generalized fuzzy closed sets in smoothbitopological spaces by using (τiθ-fuzzy closure, denoted Cθon smooth bitopological spaces by using smooth supra topological space(X, τ12) which is generated from ...
Osama A. E. Tantawy   +2 more
doaj  

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