{"title":"Enriques曲面一点爆破的Kähler锥与辛锥的比较","authors":"Shengzhen Ning","doi":"10.1112/jlms.70117","DOIUrl":null,"url":null,"abstract":"<p>We follow the study by Cascini–Panov on symplectic generic complex structures on Kähler surfaces with <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>p</mi>\n <mi>g</mi>\n </msub>\n <mo>=</mo>\n <mn>0</mn>\n </mrow>\n <annotation>$p_g=0$</annotation>\n </semantics></math>, a question proposed by Li, by demonstrating that the one-point blowup of an Enriques surface admits non-Kähler symplectic forms. This phenomenon relies on the abundance of elliptic fibrations on Enriques surfaces, characterized by various invariants from the algebraic geometry. We also provide a quantitative comparison of these invariants to further give a detailed examination of the distinction between Kähler cone and symplectic cone.</p>","PeriodicalId":49989,"journal":{"name":"Journal of the London Mathematical Society-Second Series","volume":"111 3","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparing Kähler cone and symplectic cone of one-point blowup of Enriques surface\",\"authors\":\"Shengzhen Ning\",\"doi\":\"10.1112/jlms.70117\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We follow the study by Cascini–Panov on symplectic generic complex structures on Kähler surfaces with <span></span><math>\\n <semantics>\\n <mrow>\\n <msub>\\n <mi>p</mi>\\n <mi>g</mi>\\n </msub>\\n <mo>=</mo>\\n <mn>0</mn>\\n </mrow>\\n <annotation>$p_g=0$</annotation>\\n </semantics></math>, a question proposed by Li, by demonstrating that the one-point blowup of an Enriques surface admits non-Kähler symplectic forms. This phenomenon relies on the abundance of elliptic fibrations on Enriques surfaces, characterized by various invariants from the algebraic geometry. We also provide a quantitative comparison of these invariants to further give a detailed examination of the distinction between Kähler cone and symplectic cone.</p>\",\"PeriodicalId\":49989,\"journal\":{\"name\":\"Journal of the London Mathematical Society-Second Series\",\"volume\":\"111 3\",\"pages\":\"\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2025-03-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the London Mathematical Society-Second Series\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1112/jlms.70117\",\"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":"Journal of the London Mathematical Society-Second Series","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1112/jlms.70117","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Comparing Kähler cone and symplectic cone of one-point blowup of Enriques surface
We follow the study by Cascini–Panov on symplectic generic complex structures on Kähler surfaces with , a question proposed by Li, by demonstrating that the one-point blowup of an Enriques surface admits non-Kähler symplectic forms. This phenomenon relies on the abundance of elliptic fibrations on Enriques surfaces, characterized by various invariants from the algebraic geometry. We also provide a quantitative comparison of these invariants to further give a detailed examination of the distinction between Kähler cone and symplectic cone.
期刊介绍:
The Journal of the London Mathematical Society has been publishing leading research in a broad range of mathematical subject areas since 1926. The Journal welcomes papers on subjects of general interest that represent a significant advance in mathematical knowledge, as well as submissions that are deemed to stimulate new interest and research activity.