{"title":"完美样环的实拓扑Hochschild同调","authors":"Jens Hornbostel, Doosung Park","doi":"10.1112/topo.70032","DOIUrl":null,"url":null,"abstract":"<p>We refine several results of Bhatt–Morrow–Scholze on <span></span><math>\n <semantics>\n <mi>THH</mi>\n <annotation>$\\mathrm{THH}$</annotation>\n </semantics></math> to real topological Hochschild homology (<span></span><math>\n <semantics>\n <mi>THR</mi>\n <annotation>$\\mathrm{THR}$</annotation>\n </semantics></math>). In particular, we compute <span></span><math>\n <semantics>\n <mi>THR</mi>\n <annotation>$\\mathrm{THR}$</annotation>\n </semantics></math> of perfectoid rings. This will be useful for establishing motivic filtrations on real topological Hochschild and cyclic homology of quasisyntomic rings. We also establish a real refinement of the Hochschild–Kostant–Rosenberg theorem.</p>","PeriodicalId":56114,"journal":{"name":"Journal of Topology","volume":"18 3","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Real topological Hochschild homology of perfectoid rings\",\"authors\":\"Jens Hornbostel, Doosung Park\",\"doi\":\"10.1112/topo.70032\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We refine several results of Bhatt–Morrow–Scholze on <span></span><math>\\n <semantics>\\n <mi>THH</mi>\\n <annotation>$\\\\mathrm{THH}$</annotation>\\n </semantics></math> to real topological Hochschild homology (<span></span><math>\\n <semantics>\\n <mi>THR</mi>\\n <annotation>$\\\\mathrm{THR}$</annotation>\\n </semantics></math>). In particular, we compute <span></span><math>\\n <semantics>\\n <mi>THR</mi>\\n <annotation>$\\\\mathrm{THR}$</annotation>\\n </semantics></math> of perfectoid rings. This will be useful for establishing motivic filtrations on real topological Hochschild and cyclic homology of quasisyntomic rings. We also establish a real refinement of the Hochschild–Kostant–Rosenberg theorem.</p>\",\"PeriodicalId\":56114,\"journal\":{\"name\":\"Journal of Topology\",\"volume\":\"18 3\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2025-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Topology\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://londmathsoc.onlinelibrary.wiley.com/doi/10.1112/topo.70032\",\"RegionNum\":2,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Topology","FirstCategoryId":"100","ListUrlMain":"https://londmathsoc.onlinelibrary.wiley.com/doi/10.1112/topo.70032","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS","Score":null,"Total":0}
Real topological Hochschild homology of perfectoid rings
We refine several results of Bhatt–Morrow–Scholze on to real topological Hochschild homology (). In particular, we compute of perfectoid rings. This will be useful for establishing motivic filtrations on real topological Hochschild and cyclic homology of quasisyntomic rings. We also establish a real refinement of the Hochschild–Kostant–Rosenberg theorem.
期刊介绍:
The Journal of Topology publishes papers of high quality and significance in topology, geometry and adjacent areas of mathematics. Interesting, important and often unexpected links connect topology and geometry with many other parts of mathematics, and the editors welcome submissions on exciting new advances concerning such links, as well as those in the core subject areas of the journal.
The Journal of Topology was founded in 2008. It is published quarterly with articles published individually online prior to appearing in a printed issue.