{"title":"论局部共形对称几何中精确拉格朗日的投影","authors":"Adrien Currier","doi":"arxiv-2408.07760","DOIUrl":null,"url":null,"abstract":"In this paper, we construct examples of exact Lagrangians (of \"locally\nconformally symplectic\" type) in cotangent bundles of closed manifolds with\nlocally conformally symplectic structures and give conditions under which the\nprojection induces a simple homotopy equivalence between an exact Lagrangian\nand the $0$-section of the cotangent bundle. This line of questioning follows\nin the footsteps of Abouzaid and Kragh, and more generally of the Arnol'd\nconjecture. Notably, we will see that while exact Lagrangians cannot be spheres\nin this setting, a naive adaptation of the Abouzaid-Kragh theorem does not hold\nin this generalization.","PeriodicalId":501155,"journal":{"name":"arXiv - MATH - Symplectic Geometry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the projection of exact Lagrangians in locally conformally symplectic geometry\",\"authors\":\"Adrien Currier\",\"doi\":\"arxiv-2408.07760\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we construct examples of exact Lagrangians (of \\\"locally\\nconformally symplectic\\\" type) in cotangent bundles of closed manifolds with\\nlocally conformally symplectic structures and give conditions under which the\\nprojection induces a simple homotopy equivalence between an exact Lagrangian\\nand the $0$-section of the cotangent bundle. This line of questioning follows\\nin the footsteps of Abouzaid and Kragh, and more generally of the Arnol'd\\nconjecture. Notably, we will see that while exact Lagrangians cannot be spheres\\nin this setting, a naive adaptation of the Abouzaid-Kragh theorem does not hold\\nin this generalization.\",\"PeriodicalId\":501155,\"journal\":{\"name\":\"arXiv - MATH - Symplectic Geometry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - Symplectic Geometry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2408.07760\",\"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 - Symplectic Geometry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.07760","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
On the projection of exact Lagrangians in locally conformally symplectic geometry
In this paper, we construct examples of exact Lagrangians (of "locally
conformally symplectic" type) in cotangent bundles of closed manifolds with
locally conformally symplectic structures and give conditions under which the
projection induces a simple homotopy equivalence between an exact Lagrangian
and the $0$-section of the cotangent bundle. This line of questioning follows
in the footsteps of Abouzaid and Kragh, and more generally of the Arnol'd
conjecture. Notably, we will see that while exact Lagrangians cannot be spheres
in this setting, a naive adaptation of the Abouzaid-Kragh theorem does not hold
in this generalization.