{"title":"通过对应关系实现双变代数共线性","authors":"Shoji Yokura","doi":"10.4310/pamq.2024.v20.n2.a8","DOIUrl":null,"url":null,"abstract":"A bi-variant theory $\\mathbb{B}(X,Y)$ defined for a pair $(X,Y)$ is a theory satisfying properties similar to those of Fulton–Mac Pherson’s bivariant theory $\\mathbb{B}(X \\xrightarrow{f} Y)$ defined for a morphism $f : X \\rightarrow Y$. In this paper, using correspondences we construct a bi-variant algebraic cobordism $\\Omega^{\\ast,\\sharp} (X, Y )$ such that $\\Omega^{\\ast,\\sharp}(X, pt)$ is isomorphic to Lee–Pandharipande’s algebraic cobordism of vector bundles $\\Omega \\underline{}_{\\ast,\\sharp} (X)$. In particular, $\\Omega^\\ast (X, pt) = \\Omega^{\\ast,0} (X, pt)$ is isomorphic to Levine–Morel’s algebraic cobordism $\\Omega \\underline{}_{\\ast} (X)$. Namely, $\\Omega^{\\ast,\\sharp} (X,Y)$ is a <i>bi-variant version</i> of Lee–Pandharipande’s algebraic cobordism of bundles $\\Omega_{\\ast,\\sharp} (X)$.","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A bi-variant algebraic cobordism via correspondences\",\"authors\":\"Shoji Yokura\",\"doi\":\"10.4310/pamq.2024.v20.n2.a8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A bi-variant theory $\\\\mathbb{B}(X,Y)$ defined for a pair $(X,Y)$ is a theory satisfying properties similar to those of Fulton–Mac Pherson’s bivariant theory $\\\\mathbb{B}(X \\\\xrightarrow{f} Y)$ defined for a morphism $f : X \\\\rightarrow Y$. In this paper, using correspondences we construct a bi-variant algebraic cobordism $\\\\Omega^{\\\\ast,\\\\sharp} (X, Y )$ such that $\\\\Omega^{\\\\ast,\\\\sharp}(X, pt)$ is isomorphic to Lee–Pandharipande’s algebraic cobordism of vector bundles $\\\\Omega \\\\underline{}_{\\\\ast,\\\\sharp} (X)$. In particular, $\\\\Omega^\\\\ast (X, pt) = \\\\Omega^{\\\\ast,0} (X, pt)$ is isomorphic to Levine–Morel’s algebraic cobordism $\\\\Omega \\\\underline{}_{\\\\ast} (X)$. Namely, $\\\\Omega^{\\\\ast,\\\\sharp} (X,Y)$ is a <i>bi-variant version</i> of Lee–Pandharipande’s algebraic cobordism of bundles $\\\\Omega_{\\\\ast,\\\\sharp} (X)$.\",\"PeriodicalId\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2024-04-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.4310/pamq.2024.v20.n2.a8\",\"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://doi.org/10.4310/pamq.2024.v20.n2.a8","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A bi-variant algebraic cobordism via correspondences
A bi-variant theory $\mathbb{B}(X,Y)$ defined for a pair $(X,Y)$ is a theory satisfying properties similar to those of Fulton–Mac Pherson’s bivariant theory $\mathbb{B}(X \xrightarrow{f} Y)$ defined for a morphism $f : X \rightarrow Y$. In this paper, using correspondences we construct a bi-variant algebraic cobordism $\Omega^{\ast,\sharp} (X, Y )$ such that $\Omega^{\ast,\sharp}(X, pt)$ is isomorphic to Lee–Pandharipande’s algebraic cobordism of vector bundles $\Omega \underline{}_{\ast,\sharp} (X)$. In particular, $\Omega^\ast (X, pt) = \Omega^{\ast,0} (X, pt)$ is isomorphic to Levine–Morel’s algebraic cobordism $\Omega \underline{}_{\ast} (X)$. Namely, $\Omega^{\ast,\sharp} (X,Y)$ is a bi-variant version of Lee–Pandharipande’s algebraic cobordism of bundles $\Omega_{\ast,\sharp} (X)$.