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This short note provides a symplectic analogue of Vaisman's theorem in complex geometry. Namely, for any compact symplectic manifold satisfying the hard Lefschetz condition in degree 1, every locally conformally symplectic structure is in…

Symplectic Geometry · Mathematics 2024-04-08 Mehdi Lejmi , Scott O. Wilson

The harmonic cohomology of a Donaldson symplectic submanifold and of an Auroux symplectic submanifold are compared with that of its ambient space. We also study symplectic manifolds satisfying a weakly Lefschetz property, that is, the…

Symplectic Geometry · Mathematics 2007-05-23 Marisa Fernandez , Vicente Munoz , Luis Ugarte

We define a family of symplectic invariants which obstruct exact symplectic embeddings between Liouville manifolds, using the general formalism of linearized contact homology and its L-infinity structure. As our primary application, we…

Symplectic Geometry · Mathematics 2024-04-24 Sheel Ganatra , Kyler Siegel

We construct examples of simply connected nonalgebraic symplectic fourfolds with a prescribed number of nonintersecting symplectic curves with positive self-intersections.

Algebraic Geometry · Mathematics 2007-05-23 Fedor Bogomolov , Yuri Tschinkel

In previous works, we have introduced the blown-up intersection cohomology and used it to extend Sullivan's minimal models theory to the framework of pseudomanifolds, and to give a positive answer to a conjecture of M. Goresky and W. Pardon…

Algebraic Topology · Mathematics 2018-06-20 David Chataur , Martintxo Saralegi-Aranguren , Daniel Tanré

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

We give an overview of various recent results concerning the topology of symplectic 4-manifolds and singular plane curves, using branched covers and isotopy problems as a unifying theme. While this paper does not contain any new results, we…

Geometric Topology · Mathematics 2007-05-23 Denis Auroux

Examples of nonformal simply connected symplectic manifolds are constructed.

Symplectic Geometry · Mathematics 2007-05-23 Ivan K. Babenko , Iskander A. Taimanov

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 this paper we study the hemi-slant submanifolds of cosymplectic manifolds. Necessary and sufficient conditions for distributions to be integrable are worked out. Some important results are obtained in this direction.

Differential Geometry · Mathematics 2016-03-07 Mehraj Ahmad Lone , Mohamd Saleem Lone , Mohammad Hasan Shahid

We investigate quantitative properties of exact locally conformally symplectic (LCS) manifolds, namely the homotheties of the Lee form that still produce an exact LCS form. This gives the notion of elasticity of an exact LCS pair. Using…

Symplectic Geometry · Mathematics 2025-11-21 Pacôme Van Overschelde

We prove a coisotropic embedding theorem \`a l\`a Gotay for pre-multisymplectic manifolds.

Differential Geometry · Mathematics 2025-11-03 Luca Schiavone

This paper is a study of almost contact statistical manifolds. Especially this study is focused on almost cosymplectic statistical manifolds. We obtained basic properties of such manifolds. It is proved a characterization theorem and a…

Differential Geometry · Mathematics 2018-01-31 Aziz Yazla , İrem Küpeli Erken , Cengizhan Murathan

In this paper we study the coisotropic reduction in different types of dynamics according to the geometry of the corresponding phase space. The relevance of the coisotropic reduction is motivated by the fact that these dynamics can always…

Symplectic Geometry · Mathematics 2024-05-22 Manuel de León , Rubén Izquierdo-López

We introduce scattering-symplectic manifolds, manifolds with a type of minimally degenerate Poisson structure that is not too restrictive so as to have a large class of examples, yet restrictive enough for standard Poisson invariants to be…

Symplectic Geometry · Mathematics 2021-01-27 Melinda Lanius

This is a survey article on symplectically aspherical manifolds. The paper contains a discussion on constructions of symplectically aspherical manifolds, their topological properties and the role of this class in symplectic topology.…

Symplectic Geometry · Mathematics 2008-09-02 Jarek Kedra , Yuli Rudyak , Aleksy Tralle

We show that smooth well formed weighted complete intersections have finite automorphism groups, with several obvious exceptions.

Algebraic Geometry · Mathematics 2020-08-13 Victor Przyjalkowski , Constantin Shramov

We prove a generalized mirror conjecture for non-negative complete intersections in symplectic toric manifolds. Namely, we express solutions of the PDE system describing quantum cohomology of such a manifold in terms of suitable…

alg-geom · Mathematics 2008-02-03 Alexander Givental

Using the structural theorems developed in [Hua13], we study the deformation theory of coisotropic submanifolds in contact manifolds, under the assumption that the characteristic foliation is nonsingular. In the "middle" dimensions, we find…

Symplectic Geometry · Mathematics 2014-11-25 Yang Huang

We prove that symplectic cohomology for open convex symplectic manifolds is invariant when the symplectic form undergoes deformations which may be non-exact and non-compactly supported, provided one uses the correct local system of…

Symplectic Geometry · Mathematics 2020-10-01 Gabriele Benedetti , Alexander F. Ritter
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