{"title":"弱强星门格尔空间","authors":"G. Kumar, B. Tyagi","doi":"10.4067/s0719-06462021000200287","DOIUrl":null,"url":null,"abstract":"A space \\(X\\) is called weakly strongly star-Menger space if for each sequence (\\(\\mathcal{U}_{n} : n \\in \\omega\\)) of open covers of \\(X\\), there is a sequence \\((F_n : n\\in\\omega)\\) of finite subsets of \\(X\\) such that \\(\\overline{\\bigcup_{n\\in\\omega} St(F_n, \\mathcal{U}_n)}\\) is \\(X\\). In this paper, we investigate the relationship of weakly strongly star-Menger spaces with other related spaces. It is shown that a Hausdorff paracompact weakly star Menger \\(P\\)-space is star-Menger. We also study the images and preimages of weakly strongly star-Menger spaces under various type of maps.","PeriodicalId":36416,"journal":{"name":"Cubo","volume":" ","pages":""},"PeriodicalIF":0.5000,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Weakly strongly star-Menger spaces\",\"authors\":\"G. Kumar, B. Tyagi\",\"doi\":\"10.4067/s0719-06462021000200287\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A space \\\\(X\\\\) is called weakly strongly star-Menger space if for each sequence (\\\\(\\\\mathcal{U}_{n} : n \\\\in \\\\omega\\\\)) of open covers of \\\\(X\\\\), there is a sequence \\\\((F_n : n\\\\in\\\\omega)\\\\) of finite subsets of \\\\(X\\\\) such that \\\\(\\\\overline{\\\\bigcup_{n\\\\in\\\\omega} St(F_n, \\\\mathcal{U}_n)}\\\\) is \\\\(X\\\\). In this paper, we investigate the relationship of weakly strongly star-Menger spaces with other related spaces. It is shown that a Hausdorff paracompact weakly star Menger \\\\(P\\\\)-space is star-Menger. We also study the images and preimages of weakly strongly star-Menger spaces under various type of maps.\",\"PeriodicalId\":36416,\"journal\":{\"name\":\"Cubo\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2021-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cubo\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4067/s0719-06462021000200287\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cubo","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4067/s0719-06462021000200287","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
A space \(X\) is called weakly strongly star-Menger space if for each sequence (\(\mathcal{U}_{n} : n \in \omega\)) of open covers of \(X\), there is a sequence \((F_n : n\in\omega)\) of finite subsets of \(X\) such that \(\overline{\bigcup_{n\in\omega} St(F_n, \mathcal{U}_n)}\) is \(X\). In this paper, we investigate the relationship of weakly strongly star-Menger spaces with other related spaces. It is shown that a Hausdorff paracompact weakly star Menger \(P\)-space is star-Menger. We also study the images and preimages of weakly strongly star-Menger spaces under various type of maps.