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In this paper, Floer homology for Lagrangian submanifolds in an open symplectic manifold given as the complement of a smooth divisor is discussed. The main new feature of this construction is that we do not make any assumption on positivity…

Symplectic Geometry · Mathematics 2022-10-31 Aliakbar Daemi , Kenji Fukaya

Generalizing our ideas in [arXiv:1006.3313], we explain how topologically-twisted N=2 gauge theory on a four-manifold with boundary, will allow us to furnish purely physical proofs of (i) the Atiyah-Floer conjecture, (ii) Munoz's theorem…

High Energy Physics - Theory · Physics 2022-09-20 Meer Ashwinkumar , Kee-Seng Png , Meng-Chwan Tan

We study the mirror operation of the Atiyah flop in symplectic geometry. We formulate the operation for a symplectic manifold with a Lagrangian fibration. Furthermore we construct geometric stability conditions on the derived Fukaya…

Symplectic Geometry · Mathematics 2017-06-27 Yu-Wei Fan , Hansol Hong , Siu-Cheong Lau , Shing-Tung Yau

In this paper, we study the Seiberg-Witten equations on the product R x Y, where Y is a compact 3-manifold with boundary. Following the approach of Salamon and Wehrheim in the instanton case, we impose Lagrangian boundary conditions for the…

Differential Geometry · Mathematics 2016-06-03 Timothy Nguyen

We investigate the extrinsic topology of Lagrangian submanifolds and of their submanifolds in closed symplectic manifolds using Floer homological methods. The first result asserts that the homology class of a displaceable monotone…

Symplectic Geometry · Mathematics 2010-08-10 Peter Albers

In the early days of the Floer theory, Atiyah asked if there is a Milnor fiber description of the Floer homology of the links of singularities. We answer this question for the Brieskorn-Hamm complete intersection singularities. The…

Geometric Topology · Mathematics 2024-10-23 Kyoung-Seog Lee , Anatoly Libgober , Nikolai Saveliev

We develop Lagrangian Floer Theory for exact, graded, immersed Lagrangians with clean self-intersection using Seidel's setup. A positivity assumption on the index of the self intersection points is imposed to rule out certain (but not all)…

Symplectic Geometry · Mathematics 2015-10-27 Garrett Alston , Erkao Bao

The main goal of this paper is to discuss a symplectic interpretation of Lipshitz, Ozsvath and Thurston's bordered Heegaard-Floer homology in terms of Fukaya categories of symmetric products and Lagrangian correspondences. More…

Geometric Topology · Mathematics 2010-07-29 Denis Auroux

We introduce the notion of (graded) anchored Lagrangian submanifolds and use it to study the filtration of Floer' s chain complex. We then obtain an anchored version of Lagrangian Floer homology and its (higher) product structures. They are…

Symplectic Geometry · Mathematics 2009-07-14 Kenji Fukaya , Yong-Geun Oh , Hiroshi Ohta , Kaoru Ono

We prove an excision theorem for the singular instanton Floer homology that allows the excision surfaces to intersect the singular locus. This is an extension of the non-singular excision theorem by Kronheimer and Mrowka and the genus-zero…

Geometric Topology · Mathematics 2019-07-29 Yi Xie , Boyu Zhang

Under Floer theoretic conditions, we obtain quantitative estimates on the closeness (Hausdorff distance, flat norm, F-metric) between two Lagrangians, depending on the smallness of Lagrangian angles. Some applications include a strong-weak…

Symplectic Geometry · Mathematics 2025-08-20 Yang Li

This paper is a continuation of [13], where new variational principles were introduced based on the concept of anti-selfdual (ASD) Lagrangians. We continue here the program of using these Lagrangians to provide variational formulations and…

Analysis of PDEs · Mathematics 2007-05-23 Nassif Ghoussoub , Leo Tzou

We study symplectic Laplacians on compact symplectic manifolds with boundary. These Laplacians are associated with symplectic cohomologies of differential forms and can be of fourth-order. We introduce several natural boundary conditions on…

Symplectic Geometry · Mathematics 2014-09-30 Li-Sheng Tseng , Lihan Wang

We develop the gluing theory of contact instantons in the context of open strings and in the context of closed strings \emph{with vanishing charge}, for example in the symplectization context. This is one of the key ingredients for the…

Symplectic Geometry · Mathematics 2022-12-01 Yong-Geun Oh

Sutured instanton Floer homology was introduced by Kronheimer and Mrowka. In this paper, we prove that for a taut balanced sutured manifold with vanishing second homology, the dimension of the sutured instanton Floer homology provides a…

Geometric Topology · Mathematics 2020-08-04 Zhenkun Li

In this article we define intersection Floer homology for exact Lagrangian cobordisms between Legendrian submanifolds in the contactisation of a Liouville manifold, provided that the Chekanov-Eliashberg algebras of the negative ends of the…

Symplectic Geometry · Mathematics 2025-02-07 Baptiste Chantraine , Georgios Dimitroglou Rizell , Paolo Ghiggini , Roman Golovko

In this article we show that boundary conditions can be treated as Lagrangian and Hamiltonian constraints. Using the Dirac method, we find that boundary conditions are equivalent to an infinite chain of second class constraints which is a…

High Energy Physics - Theory · Physics 2009-01-07 M. M. Sheikh-Jabbari , A. Shirzad

Answering a question of Witten, we introduce a novel method for defining an integral version of Lagrangian Floer homology, removing the standard restriction that the Lagrangians in question must be relatively Pin. Using this technique, we…

Symplectic Geometry · Mathematics 2019-12-05 Semon Rezchikov

In this article we address two issues. First, we explore to what extent the techniques of Piunikhin, Salamon and Schwarz in [PSS96] can be carried over to Lagrangian Floer homology. In [PSS96] an isomorphism between Hamiltonian Floer…

Symplectic Geometry · Mathematics 2011-11-10 Peter Albers

In this paper we prove another pairing theorem for bordered Floer homology. Unlike the original pairing theorem, this one is stated in terms of homomorphisms, not tensor products. The present formulation is closer in spirit to the usual…

Geometric Topology · Mathematics 2016-03-29 Robert Lipshitz , Peter S. Ozsváth , Dylan P. Thurston