Results 31 to 40 of about 140 (131)

Separation axioms in neutrosophic supra topological space and neutrosophic supra bi-topological space [PDF]

Neutrosophic Sets and Systems, 2022
In this paper, as a new separation axioms in neutrosophic supra topological space, NS-Ti- space (i=0,1,2) is built in this space. Moreover, SN.T1T2-open(closed) sets are defined in neutrosophic supra bi-topological spaces. Also SNBi-Ti-space (i=0,1,2) is
Riad K. Al-Hamido
doaj   +1 more source

Selection principles and bitopological hyperspaces

Applied General Topology, 2023
In this paper we continue to research relationships between closure-type properties of hyperspaces over a space X and covering properties of X. For a Hausdorff space X we denote by 2X the family of all closed subsets of X.
Alexander V. Osipov
doaj   +1 more source

Some Types of Lindelof in Bitopological Spaces [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
In this paper, we define another types of Lindelof on bitopological space, namely N-Lindelof , S-Lindelof and pair-wise Lindelof spaces, and we introduce some properties about these types.
Fawzi Noori Nassar
doaj   +1 more source

Recognition of Finite Bitopological Spaces with Unique Isolated Point [PDF]

Sahand Communications in Mathematical Analysis
A mapping $ f$ from a bitopological space $(X, \tau_{1}, \tau_{2})$ into a bitopological space $(Y, \tau^{'}_{1}, \tau^{'}_{2}) $ is said to be a pair-homeomorphism if and only if the induced functions $ f_1: (X, \tau_{1})\rightarrow(Y, \tau^{'}_{1 ...
Devi Selvam, Sivaramakrishnan Monikandan
doaj   +1 more source

H-C and H*-C Semi compactness in bitopological- space [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
In this paper we introduce two new concepts, namely H-C-Semi compact and H*- C-Semi compact in bitopological space several propositions and examples about these concepts are introduced .
Hamad Mohammed Salih
doaj   +1 more source

Pre-Open Sets In Minimal Bitopological Spaces

Journal of Kufa for Mathematics and Computer, 2015
Let be a topological space, let be an M-structure on then is called a minimal bitopological space. In this work, I am study pre-open sets in minimal bitopological spaces with some result and definitions separation axioms on minimal bitopological ...
Ameer Mohammad-Husain Hassan
doaj   +1 more source

β(τ1, τ2)‐Continuous Multifunctions on Bitopological Spaces

Journal of Mathematics, Volume 2020, Issue 1, 2020., 2020
The purpose of this paper is to introduce the concepts of β(τ1, τ2)‐continuous multifunctions and almost β(τ1, τ2)‐continuous multifunctions. Moreover, some characterizations of β(τ1, τ2)‐continuous multifunctions and almost β(τ1, τ2)‐continuous multifunctions are investigated.
Kaewta Laprom, Chawalit Boonpok, Chokchai Viriyapong, Ali Jaballah   +3 more
wiley   +1 more source

(τ1, τ2)α‐Continuity for Multifunctions

Journal of Mathematics, Volume 2020, Issue 1, 2020., 2020
The main goal of this article is to introduce the concepts of upper and lower (τ1, τ2)α‐continuous multifunctions. Characterizations of upper and lower (τ1, τ2)α‐continuous multifunctions are investigated. The relationships between upper and lower (τ1, τ2)α‐continuous multifunctions and the other types of continuity are discussed.
Chokchai Viriyapong, Chawalit Boonpok, Frédéric Mynard   +2 more
wiley   +1 more source

GENERALIZED δ-S∧ij- SETS IN BITOPOLOGICAL SPACES [PDF]

Assiut University Journal of Multidisciplinary Scientific Research, 2016
GENERALIZED δ-S∧ij-SETS IN BITOPOLOGICAL SPACES In this paper, we introduce and study ij -δ- semi closed and ij  -δ- semi open sets in bitopological spaces.
doaj   +1 more source

Some Modifications of Pairwise Soft Sets and Some of Their Related Concepts

Mathematics, 2021
In this paper, we first define soft u-open sets and soft s-open as two new classes of soft sets on soft bitopological spaces. We show that the class of soft p-open sets lies strictly between these classes, and we give several sufficient conditions for ...
Samer Al Ghour
doaj   +1 more source