{"title":"雅可比代数与雅可比矩阵模的Lefschetz性质","authors":"Alexandru Dimca, Giovanna Ilardi","doi":"10.2422/2036-2145.202301_014","DOIUrl":null,"url":null,"abstract":"Let $V:f=0$ be a hypersurface of degree $d \\geq 3$ in the complex projective space $\\mathbb{P}^n$, $n \\geq 3$, having only isolated singularities. Let $M(f)$ be the associated Jacobian algebra and $H: \\ell=0$ be a hyperplane in $\\mathbb{P}^n$ avoiding the singularities of $V$, but such that $V \\cap H$ is singular. We related the Lefschetz type properties of the linear maps $\\ell: M(f)_k \\to M(f)_{k+1}$ induced by the multiplication by linear form $\\ell$ to the singularities of the hyperplane section $V \\cap H$. Similar results are obtained for the Jacobian module $N(f)$.","PeriodicalId":50966,"journal":{"name":"Annali Della Scuola Normale Superiore Di Pisa-Classe Di Scienze","volume":"8 1","pages":"0"},"PeriodicalIF":1.2000,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lefschetz properties of Jacobian algebras and Jacobian modules\",\"authors\":\"Alexandru Dimca, Giovanna Ilardi\",\"doi\":\"10.2422/2036-2145.202301_014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Let $V:f=0$ be a hypersurface of degree $d \\\\geq 3$ in the complex projective space $\\\\mathbb{P}^n$, $n \\\\geq 3$, having only isolated singularities. Let $M(f)$ be the associated Jacobian algebra and $H: \\\\ell=0$ be a hyperplane in $\\\\mathbb{P}^n$ avoiding the singularities of $V$, but such that $V \\\\cap H$ is singular. We related the Lefschetz type properties of the linear maps $\\\\ell: M(f)_k \\\\to M(f)_{k+1}$ induced by the multiplication by linear form $\\\\ell$ to the singularities of the hyperplane section $V \\\\cap H$. Similar results are obtained for the Jacobian module $N(f)$.\",\"PeriodicalId\":50966,\"journal\":{\"name\":\"Annali Della Scuola Normale Superiore Di Pisa-Classe Di Scienze\",\"volume\":\"8 1\",\"pages\":\"0\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2023-10-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annali Della Scuola Normale Superiore Di Pisa-Classe Di Scienze\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2422/2036-2145.202301_014\",\"RegionNum\":2,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annali Della Scuola Normale Superiore Di Pisa-Classe Di Scienze","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2422/2036-2145.202301_014","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Lefschetz properties of Jacobian algebras and Jacobian modules
Let $V:f=0$ be a hypersurface of degree $d \geq 3$ in the complex projective space $\mathbb{P}^n$, $n \geq 3$, having only isolated singularities. Let $M(f)$ be the associated Jacobian algebra and $H: \ell=0$ be a hyperplane in $\mathbb{P}^n$ avoiding the singularities of $V$, but such that $V \cap H$ is singular. We related the Lefschetz type properties of the linear maps $\ell: M(f)_k \to M(f)_{k+1}$ induced by the multiplication by linear form $\ell$ to the singularities of the hyperplane section $V \cap H$. Similar results are obtained for the Jacobian module $N(f)$.
期刊介绍:
The Annals of the Normale Superiore di Pisa, Science Class, publishes papers that contribute to the development of Mathematics both from the theoretical and the applied point of view. Research papers or papers of expository type are considered for publication.
The Annals of the Normale Scuola di Pisa - Science Class is published quarterly
Soft cover, 17x24