{"title":"实现有限群的正则表达式","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":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2024-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0021869324005222\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021869324005222","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
给定有限群 G 的正则表达式和正整数 n,我们构建一个(有限)拓扑空间 X,使其自同调等价类群 E(X) 和同构群 Aut(X) 与 G 同构,并且 G 对 n 次同调群 Hn(X) 的作用就是正则表达式。我们还讨论了其他表示。
Realizing regular representations of finite groups
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.