{"title":"元胞-林德洛夫拓扑空间若干性质的研究","authors":"Yeoh Wei, Z. Salleh","doi":"10.46754/jmsi.2022.12.006","DOIUrl":null,"url":null,"abstract":"Based on Bella and Spadaro (2017), a topological space T is called cellular-Lindelof if for every family F of pairwise disjoint nonempty open subsets of T, there exists a Lindelof subspace L subset T such that F intersection L ≠ empty set for every F∈F. \nThe aim of this paper is to investigate the properties of cellular Lindelof spaces, its relation with other spaces and find cardinal inequality for cellular-Lindelof spaces based on the Erdos and Rado theorem. The concept of cellular-Lindelof was utilized to show the properties of cellular-Lindelof spaces and its relation with other spaces. We obtain few examples of topological spaces which are not cellular-Lindelof. Erdos and Rado theorem is a theorem based on intersecting set families. Cardinal inequality that was found is based on lemma from Erdos and Rado theorem and information obtained from some journal papers. The study of cellular-Lindelof spaces is the extension study of Lindelof spaces and this is important as it can become a reference material for the future researchers. The central object of the study of topological dynamics is a topological dynamical system, where topological spaces needed. Thus, the study of cellular-Lindelof spaces is also important to the field of dynamical system.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":"3 1","pages":""},"PeriodicalIF":0.4000,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A STUDY OF SOME PROPERTIES FOR CELLULAR-LINDELOF TOPOLOGICAL SPACES\",\"authors\":\"Yeoh Wei, Z. Salleh\",\"doi\":\"10.46754/jmsi.2022.12.006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Based on Bella and Spadaro (2017), a topological space T is called cellular-Lindelof if for every family F of pairwise disjoint nonempty open subsets of T, there exists a Lindelof subspace L subset T such that F intersection L ≠ empty set for every F∈F. \\nThe aim of this paper is to investigate the properties of cellular Lindelof spaces, its relation with other spaces and find cardinal inequality for cellular-Lindelof spaces based on the Erdos and Rado theorem. The concept of cellular-Lindelof was utilized to show the properties of cellular-Lindelof spaces and its relation with other spaces. We obtain few examples of topological spaces which are not cellular-Lindelof. Erdos and Rado theorem is a theorem based on intersecting set families. Cardinal inequality that was found is based on lemma from Erdos and Rado theorem and information obtained from some journal papers. The study of cellular-Lindelof spaces is the extension study of Lindelof spaces and this is important as it can become a reference material for the future researchers. The central object of the study of topological dynamics is a topological dynamical system, where topological spaces needed. Thus, the study of cellular-Lindelof spaces is also important to the field of dynamical system.\",\"PeriodicalId\":43670,\"journal\":{\"name\":\"Iranian Journal of Mathematical Sciences and Informatics\",\"volume\":\"3 1\",\"pages\":\"\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2022-12-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Iranian Journal of Mathematical Sciences and Informatics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.46754/jmsi.2022.12.006\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Mathematical Sciences and Informatics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.46754/jmsi.2022.12.006","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
摘要
基于Bella and Spadaro(2017),如果对于T的成对不相交的非空开子集的每一族F,存在一个Lindelof子空间L子集T,使得对于每一个F∈F, F交L≠空集,则拓扑空间T称为细胞林德洛夫。本文的目的是研究元胞林德洛夫空间的性质及其与其他空间的关系,并根据Erdos定理和Rado定理找到元胞林德洛夫空间的基数不等式。利用细胞-林德洛夫的概念来说明细胞-林德洛夫空间的性质及其与其他空间的关系。我们得到了一些拓扑空间不是元胞林德洛夫的例子。Erdos和Rado定理是一个基于相交集族的定理。根据Erdos定理和Rado定理的引理和从一些期刊论文中获得的信息,发现了基数不等式。细胞林德洛夫空间的研究是林德洛夫空间的延伸研究,这对今后的研究具有重要的参考意义。拓扑动力学研究的中心对象是拓扑动力系统,其中需要拓扑空间。因此,细胞林德洛夫空间的研究对动力系统领域也具有重要意义。
A STUDY OF SOME PROPERTIES FOR CELLULAR-LINDELOF TOPOLOGICAL SPACES
Based on Bella and Spadaro (2017), a topological space T is called cellular-Lindelof if for every family F of pairwise disjoint nonempty open subsets of T, there exists a Lindelof subspace L subset T such that F intersection L ≠ empty set for every F∈F.
The aim of this paper is to investigate the properties of cellular Lindelof spaces, its relation with other spaces and find cardinal inequality for cellular-Lindelof spaces based on the Erdos and Rado theorem. The concept of cellular-Lindelof was utilized to show the properties of cellular-Lindelof spaces and its relation with other spaces. We obtain few examples of topological spaces which are not cellular-Lindelof. Erdos and Rado theorem is a theorem based on intersecting set families. Cardinal inequality that was found is based on lemma from Erdos and Rado theorem and information obtained from some journal papers. The study of cellular-Lindelof spaces is the extension study of Lindelof spaces and this is important as it can become a reference material for the future researchers. The central object of the study of topological dynamics is a topological dynamical system, where topological spaces needed. Thus, the study of cellular-Lindelof spaces is also important to the field of dynamical system.