{"title":"D-metric Spaces and Composition Operators Between Hyperbolic Weighted Family of Function Spaces","authors":"A. Kamal, T. I. Yassen","doi":"10.4067/s0719-06462020000200215","DOIUrl":null,"url":null,"abstract":"The aim of this paper is to introduce new hyperbolic classes of functions, which will be called \\({\\mathcal{B}}^{*} _{\\alpha,\\;\\log}\\) and \\({ F ^{*}_{\\log}}(p,q,s)\\) classes. Furthermore, we introduce \\(D\\)-metrics space in the hyperbolic type classes \\({\\mathcal{B}}^{*} _{\\alpha,\\;\\log}\\) and \\( { F ^{*}_{\\log}}(p,q,s)\\). These classes are shown to be complete metric spaces with respect to the corresponding metrics. Moreover, necessary and sufficient conditions are given for the composition operator \\(C_\\phi\\) to be bounded and compact from \\({\\mathcal{B}}^{*}_{\\alpha,\\;\\log}\\) to \\({F ^{*}_{\\log}}(p,q,s)\\) spaces.","PeriodicalId":36416,"journal":{"name":"Cubo","volume":" ","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cubo","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4067/s0719-06462020000200215","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
The aim of this paper is to introduce new hyperbolic classes of functions, which will be called \({\mathcal{B}}^{*} _{\alpha,\;\log}\) and \({ F ^{*}_{\log}}(p,q,s)\) classes. Furthermore, we introduce \(D\)-metrics space in the hyperbolic type classes \({\mathcal{B}}^{*} _{\alpha,\;\log}\) and \( { F ^{*}_{\log}}(p,q,s)\). These classes are shown to be complete metric spaces with respect to the corresponding metrics. Moreover, necessary and sufficient conditions are given for the composition operator \(C_\phi\) to be bounded and compact from \({\mathcal{B}}^{*}_{\alpha,\;\log}\) to \({F ^{*}_{\log}}(p,q,s)\) spaces.