{"title":"The topology of systems of hyperspaces determined by dimension functions","authors":"Taras Banakh , Natalia Mazurenko","doi":"10.1016/j.top.2009.11.002","DOIUrl":null,"url":null,"abstract":"<div><p>Given a non-degenerate Peano continuum <span><math><mi>X</mi></math></span>, a dimension function <span><math><mstyle><mi>D</mi></mstyle><mo>:</mo><msubsup><mrow><mn>2</mn></mrow><mrow><mo>∗</mo></mrow><mrow><mi>X</mi></mrow></msubsup><mo>→</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mi>∞</mi><mo>]</mo></mrow></math></span> defined on the family <span><math><msubsup><mrow><mn>2</mn></mrow><mrow><mo>∗</mo></mrow><mrow><mi>X</mi></mrow></msubsup></math></span> of compact subsets of <span><math><mi>X</mi></math></span>, and a subset <span><math><mi>Γ</mi><mo>⊂</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mi>∞</mi><mo>)</mo></mrow></math></span>, we recognize the topological structure of the system <span><math><msub><mrow><mrow><mo>〈</mo><msup><mrow><mn>2</mn></mrow><mrow><mi>X</mi></mrow></msup><mo>,</mo><msub><mrow><mstyle><mi>D</mi></mstyle></mrow><mrow><mo>≤</mo><mi>γ</mi></mrow></msub><mrow><mo>(</mo><mi>X</mi><mo>)</mo></mrow><mo>〉</mo></mrow></mrow><mrow><mi>α</mi><mo>∈</mo><mi>Γ</mi></mrow></msub></math></span>, where <span><math><msup><mrow><mn>2</mn></mrow><mrow><mi>X</mi></mrow></msup></math></span> is the hyperspace of non-empty compact subsets of <span><math><mi>X</mi></math></span> and <span><math><msub><mrow><mstyle><mi>D</mi></mstyle></mrow><mrow><mo>≤</mo><mi>γ</mi></mrow></msub><mrow><mo>(</mo><mi>X</mi><mo>)</mo></mrow></math></span> is the subspace of <span><math><msup><mrow><mn>2</mn></mrow><mrow><mi>X</mi></mrow></msup></math></span>, consisting of non-empty compact subsets <span><math><mi>K</mi><mo>⊂</mo><mi>X</mi></math></span> with <span><math><mstyle><mi>D</mi></mstyle><mrow><mo>(</mo><mi>K</mi><mo>)</mo></mrow><mo>≤</mo><mi>γ</mi></math></span>.</p></div>","PeriodicalId":54424,"journal":{"name":"Topology","volume":"48 2","pages":"Pages 43-53"},"PeriodicalIF":0.0000,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.top.2009.11.002","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0040938309000147","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Given a non-degenerate Peano continuum , a dimension function defined on the family of compact subsets of , and a subset , we recognize the topological structure of the system , where is the hyperspace of non-empty compact subsets of and is the subspace of , consisting of non-empty compact subsets with .