Research Article
Compactness on Soft Topological Ordered Spaces and Its
Application on the Information System
T. M. Al-shami
Department of Mathematics, Sana’a University, Sana’a, Yemen
CorrespondenceshouldbeaddressedtoT.M.Al-shami;tareqalshami83@gmail.com
Received 28 October 2020; Accepted 17 December 2020; Published 18 January 2021
AcademicEditor:Ching-FengWen
Copyright©2021T.M.Al-shami.isisanopenaccessarticledistributedundertheCreativeCommonsAttributionLicense,
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
It is well known every soft topological space induced from soft information system is soft compact. In this study, we integrate
betweensoftcompactnessandpartiallyorderedsettointroducenewtypesofsoftcompactnessonthefinitespacesandinvestigate
their application on the information system. First, we initiate a notion of monotonic soft sets and establish its main properties.
Second, we introduce the concepts of monotonic soft compact and ordered soft compact spaces and show the relationships
between them with the help of examples. We give a complete description for each one of them by making use of the finite
intersection property. Also, we study some properties associated with some soft ordered spaces and finite product spaces.
Furthermore,weinvestigatetheconditionsunderwhichtheseconceptsarepreservedbetweenthesofttopologicalorderedspace
anditsparametrictopologicalorderedspaces.Intheend,weprovideanalgorithmforexpectingthemissingvaluesofobjectson
the information system depending on the concept of ordered soft compact spaces.
1. Introduction
Compactness is a property that generalizes the notion of a
closed and bounded subset of Euclidean space. It has been
describedbyusingthefiniteintersectionpropertyforclosed
sets. e important motivations beyond studying com-
pactnesshavebeengivenin[1].Withoutdoubt,theconcept
of compactness occupied a wide area of topologists’ atten-
tion. Many relevant ideas to this concept have been intro-
duced and studied. Generalizations of compactness have
been formulated in many directions, one of them given by
using generalized open sets; see, for example, [2].
In 1965, Nachbin [3] combined a partial order relation
with a topological space to define a new mathematical
structure, namely, a topological ordered space. en,
McCartan [4] formulated ordered separation axioms with
respect to open sets and neighbourhoods which were de-
scribed by increasing or decreasing operators. Shabir and
Gupta [5] extended these ordered separation axioms in the
cases of T
1
-ordered and T
2
-ordered spaces using semiopen
sets.Recently,Al-ShamiandAbo-Elhamayel[6]introduced
new types of ordered separation axioms.
In1999,Molotdsov[7]cameupwiththeideaofsoftsets
fordealingwithuncertaintiesandvagueness.ShabirandNaz
[8], in 2011, exploited soft sets to introduce the concept of
soft topological spaces and study soft separation axioms.
en, researchers started working to generalize topological
notions on the soft topological frame. In this regard,
compactness was one of the topics that received much at-
tention. It was presented and explored firstly by Molodtsov
Ayg
..
uno˘ glu and Ayg
..
un, and Zorlutuna et al. [9, 10]. en,
Hida[11]comparedbetweentwotypesofsoftcompactness.
Afterthat,Al-Shamietal.[12]definedalmostsoftcompact
and mildly soft compact spaces and investigated the main
properties. Lack of consideration in the privacy of soft sets
by some authors causes emerging some alleged results, es-
pecially those related to the properties of soft compactness.
erefore,theauthorsof[13–17]carriedoutsomecorrective
studies in this regard.
In2019,Al-Shamietal.[18]definedtopologicalordered
spacesonsoftsetting.eystudiedmonotonicsoftsetsand
thenutilizedthemtopresent p-soft T
i
-orderedspaces.Also,
they [19] presented soft I(D, B)-continuous mappings and
establishedseveralgeneralizationsofthemusinggeneralized
Hindawi
Journal of Mathematics
Volume 2021, Article ID 6699092, 12 pages
https://doi.org/10.1155/2021/6699092