{"title":"论局部环上滤波空间的几何学","authors":"Lu Qi","doi":"arxiv-2409.01705","DOIUrl":null,"url":null,"abstract":"We study the geometry of spaces of fitrations on a Noetherian local domain.\nWe introduce a metric $d_1$ on the space of saturated filtrations, inspired by\nthe Darvas metric in complex geometry, such that it is a geodesic metric space.\nIn the toric case, using Newton-Okounkov bodies, we identify the space of\nsaturated monomial filtrations with a subspace of $L^1_\\mathrm{loc}$. We also\nconsider several other topologies on such spaces and study the semi-continuity\nof the log canonical threshold function in the spirit of Koll\\'ar-Demailly.\nMoreover, there is a natural lattice structure on the space of saturated\nfiltrations, which is a generalization of the classical result that the ideals\nof a ring form a lattice.","PeriodicalId":501136,"journal":{"name":"arXiv - MATH - Rings and Algebras","volume":"139 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the geometry of spaces of filtrations on local rings\",\"authors\":\"Lu Qi\",\"doi\":\"arxiv-2409.01705\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We study the geometry of spaces of fitrations on a Noetherian local domain.\\nWe introduce a metric $d_1$ on the space of saturated filtrations, inspired by\\nthe Darvas metric in complex geometry, such that it is a geodesic metric space.\\nIn the toric case, using Newton-Okounkov bodies, we identify the space of\\nsaturated monomial filtrations with a subspace of $L^1_\\\\mathrm{loc}$. We also\\nconsider several other topologies on such spaces and study the semi-continuity\\nof the log canonical threshold function in the spirit of Koll\\\\'ar-Demailly.\\nMoreover, there is a natural lattice structure on the space of saturated\\nfiltrations, which is a generalization of the classical result that the ideals\\nof a ring form a lattice.\",\"PeriodicalId\":501136,\"journal\":{\"name\":\"arXiv - MATH - Rings and Algebras\",\"volume\":\"139 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - Rings and Algebras\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.01705\",\"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 - Rings and Algebras","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.01705","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
On the geometry of spaces of filtrations on local rings
We study the geometry of spaces of fitrations on a Noetherian local domain.
We introduce a metric $d_1$ on the space of saturated filtrations, inspired by
the Darvas metric in complex geometry, such that it is a geodesic metric space.
In the toric case, using Newton-Okounkov bodies, we identify the space of
saturated monomial filtrations with a subspace of $L^1_\mathrm{loc}$. We also
consider several other topologies on such spaces and study the semi-continuity
of the log canonical threshold function in the spirit of Koll\'ar-Demailly.
Moreover, there is a natural lattice structure on the space of saturated
filtrations, which is a generalization of the classical result that the ideals
of a ring form a lattice.