{"title":"Realizing regular representations of finite groups","authors":"Pedro J. Chocano","doi":"10.1016/j.jalgebra.2024.09.016","DOIUrl":null,"url":null,"abstract":"<div><div>Given a regular representation of a finite group <em>G</em> and a positive integer number <em>n</em>, we construct a (finite) topological space <em>X</em> such that its group of homotopy classes of self-homotopy equivalences <span><math><mi>E</mi><mo>(</mo><mi>X</mi><mo>)</mo></math></span> and its group of homeomorphisms <span><math><mi>A</mi><mi>u</mi><mi>t</mi><mo>(</mo><mi>X</mi><mo>)</mo></math></span> are isomorphic to <em>G</em>, and the action of <em>G</em> on the <em>n</em>-th homology group <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>(</mo><mi>X</mi><mo>)</mo></math></span> is the regular representation. We also discuss other representations.</div></div>","PeriodicalId":14888,"journal":{"name":"Journal of Algebra","volume":"663 ","pages":"Pages 454-467"},"PeriodicalIF":0.8000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Algebra","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021869324005222","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/10/11 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Given a regular representation of a finite group G and a positive integer number n, we construct a (finite) topological space X such that its group of homotopy classes of self-homotopy equivalences and its group of homeomorphisms are isomorphic to G, and the action of G on the n-th homology group is the regular representation. We also discuss other representations.
期刊介绍:
The Journal of Algebra is a leading international journal and publishes papers that demonstrate high quality research results in algebra and related computational aspects. Only the very best and most interesting papers are to be considered for publication in the journal. With this in mind, it is important that the contribution offer a substantial result that will have a lasting effect upon the field. The journal also seeks work that presents innovative techniques that offer promising results for future research.