{"title":"The homotopy decomposition of the suspension of a non-simply-connected five-manifold","authors":"Pengcheng Li, Zhongjian Zhu","doi":"10.1017/prm.2024.49","DOIUrl":null,"url":null,"abstract":"In this paper we determine the homotopy types of the reduced suspension space of certain connected orientable closed smooth <jats:inline-formula> <jats:alternatives> <jats:tex-math>$five$</jats:tex-math> <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mime-subtype=\"png\" xlink:href=\"S0308210524000490_inline2.png\" /> </jats:alternatives> </jats:inline-formula>-manifolds. As applications, we compute the reduced <jats:inline-formula> <jats:alternatives> <jats:tex-math>$K$</jats:tex-math> <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mime-subtype=\"png\" xlink:href=\"S0308210524000490_inline3.png\" /> </jats:alternatives> </jats:inline-formula>-groups of <jats:inline-formula> <jats:alternatives> <jats:tex-math>$M$</jats:tex-math> <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mime-subtype=\"png\" xlink:href=\"S0308210524000490_inline4.png\" /> </jats:alternatives> </jats:inline-formula> and show that the suspension map between the third cohomotopy set <jats:inline-formula> <jats:alternatives> <jats:tex-math>$\\pi ^3(M)$</jats:tex-math> <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mime-subtype=\"png\" xlink:href=\"S0308210524000490_inline5.png\" /> </jats:alternatives> </jats:inline-formula> and the fourth cohomotopy set <jats:inline-formula> <jats:alternatives> <jats:tex-math>$\\pi ^4(\\Sigma M)$</jats:tex-math> <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mime-subtype=\"png\" xlink:href=\"S0308210524000490_inline6.png\" /> </jats:alternatives> </jats:inline-formula> is a bijection.","PeriodicalId":54560,"journal":{"name":"Proceedings of the Royal Society of Edinburgh Section A-Mathematics","volume":"75 1","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Royal Society of Edinburgh Section A-Mathematics","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1017/prm.2024.49","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper we determine the homotopy types of the reduced suspension space of certain connected orientable closed smooth $five$-manifolds. As applications, we compute the reduced $K$-groups of $M$ and show that the suspension map between the third cohomotopy set $\pi ^3(M)$ and the fourth cohomotopy set $\pi ^4(\Sigma M)$ is a bijection.
期刊介绍:
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