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This article provides the first extension of Lagrangian Intersection Floer cohomology to Poisson structures which are almost everywhere symplectic, but degenerate on a lowerdimensional submanifold. The main result of the article is the…

Symplectic Geometry · Mathematics 2025-01-08 Charlotte Kirchhoff-Lukat

The purpose of this paper is to give an application of the gluing theorem for special Lagrangian submanifolds of a Calabi-Yau 3-fold. We proved a gluing theorem before to smooth a codimension-two singularity of a particular special…

Differential Geometry · Mathematics 2007-05-23 Sema Salur

This paper explores the topology of monotone Lagrangian submanifolds $L$ inside a symplectic manifold $M$ by exploiting the relationships between the quantum homology of $M$ and various quantum structures associated to the Lagrangian $L$.

Symplectic Geometry · Mathematics 2014-11-11 Paul Biran , Octav Cornea

We consider Lagrangian Floer cohomology for a pair of Lagrangian submanifolds in a symplectic manifold M. Suppose that M carries a symplectic involution, which preserves both submanifolds. Under various topological hypotheses, we prove a…

Symplectic Geometry · Mathematics 2010-08-24 Paul Seidel , Ivan Smith

In this work, we study symplectic structures on graded manifolds and their global counterparts, higher Lie groupoids. We begin by introducing the concept of graded manifold, starting with the degree 1 case, and translating key geometric…

Symplectic Geometry · Mathematics 2026-02-03 Miquel Cueca , Antonio Maglio , Fabricio Valencia

We define relative Floer theoretic invariants arising from 'quilted pseudo-holomorphic surfaces': Collections of pseudoholomorphic maps to various target spaces with 'seam conditions' in Lagrangian correspondences. As application we…

Symplectic Geometry · Mathematics 2015-03-13 Katrin Wehrheim , Chris Woodward

We consider a family of closed symplectic manifolds 4-manifolds which we call symplectic bielliptic surfaces and study its Lagrangian cobordism group of weakly-exact Lagrangian G-branes (that is, Lagrangians equipped with a grading, a Pin…

Symplectic Geometry · Mathematics 2024-03-27 Álvaro Muñiz-Brea

In this remark we discuss a relationship between (co)homology classes of a symplectic manifold realized by symplectic and lagrangian objects. We establish some transversality condition for the classes, realized by symplectic divisors and…

Symplectic Geometry · Mathematics 2007-05-23 Nik. A. Tyurin

A geometric description is given for the Sp(2) covariant version of the field-antifield quantization of general constrained systems in the Lagrangian formalism. We develop differential geometry on manifolds in which a basic set of…

High Energy Physics - Theory · Physics 2013-07-31 I Batalin , R Marnelius , A Semikhatov

The paper associates Lagrangian submanifolds in symplectic toric varieties to certain tropical curves inside the convex polyhedral domains of $\R^n$ that appear as the images of the moment map of the toric varieties. We pay a particular…

Symplectic Geometry · Mathematics 2019-01-29 Grigory Mikhalkin

A classical way to construct a Lagrangian in a symplectic manifold $\Sigma$ is to let $\Sigma$ appear as a smooth fiber in a Lefschetz fibration. If this is possible the singularities of the fibration induce Lagrangian spheres in $\Sigma$…

Symplectic Geometry · Mathematics 2011-07-12 Yochay Jerby

We examine symplectic topological features of certain family of monotone Lagrangian submanifolds in CP^n. Firstly, we give a cohomological restriction for Lagrangian submanifolds in CP^n whose first integral homologies are 3-torsion. In…

Symplectic Geometry · Mathematics 2014-01-07 Hiroshi Iriyeh

This article gives a classification, up to symplectic equivalence, of singular Lagrangian foliations given by a completely integrable system of a 4-dimensional symplectic manifold, in a full neighbourhood of a singular leaf of focus-focus…

Symplectic Geometry · Mathematics 2007-05-23 San Vu Ngoc

In this paper we construct and classify Lagrangian T^3-fibrations on non compact symplectic manifolds with singular fibres of prescribed topological type. This contributes to the understanding of the structure of the singular fibres that…

Symplectic Geometry · Mathematics 2009-08-13 Ricardo Castaño-Bernard

The main goal of our paper is the study of several classes of submanifolds of generalized complex manifolds. Along with the generalized complex submanifolds defined by Gualtieri and Hitchin (we call these ``generalized Lagrangian…

Differential Geometry · Mathematics 2019-11-14 Oren Ben-Bassat , Mitya Boyarchenko

Given a Lagrangian submanifold $L$ in a symplectic manifold $X$, the homological Lagrangian monodromy group $\mathcal{H}_L$ describes how Hamiltonian diffeomorphisms of $X$ preserving $L$ setwise act on $H_*(L)$. We begin a systematic study…

Symplectic Geometry · Mathematics 2024-05-09 Marcin Augustynowicz , Jack Smith , Jakub Wornbard

In this paper we find new topological restrictions on Lagrangian submanifolds of cotangent bundles of spheres and of Lens spaces.

Symplectic Geometry · Mathematics 2009-12-04 Lev Buhovsky

In this note, we first introduce a boundary problem for Lagrangian submanifolds, analogous to the problem for free boundary hypersurfaces and capillary hypersurfaces. Then we present several interesting examples of Lagrangian submanifolds…

Differential Geometry · Mathematics 2025-05-28 Mingyan Li , Guofang Wang , Liangjun Weng

For an adiscal or monotone regular coisotropic submanifold $N$ of a symplectic manifold I define its Floer homology to be the Floer homology of a certain Lagrangian embedding of $N$. Given a Hamiltonian isotopy $\phi=(\phi^t)$ and a…

Symplectic Geometry · Mathematics 2020-12-01 Fabian Ziltener

This is the third paper in a series of papers studying intersection Floer theory of Lagrangians in the complement of a smooth divisor. We complete the construction of Floer homology for such Lagrangians.

Symplectic Geometry · Mathematics 2022-11-07 Aliakbar Daemi , Kenji Fukaya