{"title":"论部分群作用的同源性","authors":"Emmanuel Jerez","doi":"arxiv-2404.14650","DOIUrl":null,"url":null,"abstract":"We study the partial group (co)homology of partial group actions using\nsimplicial methods. We introduce the concept of universal globalization of a\npartial group action on a $K$-module and prove that, given a partial\nrepresentation of $G$ on $M$, the partial group homology $H^{par}_{\\bullet}(G,\nM)$ is naturally isomorphic to the usual group homology $H_{\\bullet}(G, KG\n\\otimes_{G_{par}} M)$, where $KG \\otimes_{G_{par}} M$ is the universal\nglobalization of the partial group action associated to $M$. We dualize this\nresult into a cohomological spectral sequence converging to\n$H^{\\bullet}_{par}(G,M)$.","PeriodicalId":501143,"journal":{"name":"arXiv - MATH - K-Theory and Homology","volume":"7 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the homology of partial group actions\",\"authors\":\"Emmanuel Jerez\",\"doi\":\"arxiv-2404.14650\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We study the partial group (co)homology of partial group actions using\\nsimplicial methods. We introduce the concept of universal globalization of a\\npartial group action on a $K$-module and prove that, given a partial\\nrepresentation of $G$ on $M$, the partial group homology $H^{par}_{\\\\bullet}(G,\\nM)$ is naturally isomorphic to the usual group homology $H_{\\\\bullet}(G, KG\\n\\\\otimes_{G_{par}} M)$, where $KG \\\\otimes_{G_{par}} M$ is the universal\\nglobalization of the partial group action associated to $M$. We dualize this\\nresult into a cohomological spectral sequence converging to\\n$H^{\\\\bullet}_{par}(G,M)$.\",\"PeriodicalId\":501143,\"journal\":{\"name\":\"arXiv - MATH - K-Theory and Homology\",\"volume\":\"7 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-04-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - K-Theory and Homology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2404.14650\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - MATH - K-Theory and Homology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2404.14650","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
We study the partial group (co)homology of partial group actions using
simplicial methods. We introduce the concept of universal globalization of a
partial group action on a $K$-module and prove that, given a partial
representation of $G$ on $M$, the partial group homology $H^{par}_{\bullet}(G,
M)$ is naturally isomorphic to the usual group homology $H_{\bullet}(G, KG
\otimes_{G_{par}} M)$, where $KG \otimes_{G_{par}} M$ is the universal
globalization of the partial group action associated to $M$. We dualize this
result into a cohomological spectral sequence converging to
$H^{\bullet}_{par}(G,M)$.