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Related papers: Four dimensions from two in symplectic topology

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We obtain a correspondence between the group of symplectic diffeomorphisms of a 4-dimensional real torus and the vanishing locus of a certain hyperK\"ahler moment map. This observation gives rise to a new flow, called the modified moment…

Symplectic Geometry · Mathematics 2024-03-21 Yann Rollin

We give an up-to-date overview of geometric and topological properties of cosymplectic and coKaehler manifolds. We also mention some of their applications to time-dependent mechanics.

Differential Geometry · Mathematics 2013-11-22 Beniamino Cappelletti-Montano , Antonio De Nicola , Ivan Yudin

In this note, the geography problem in dimension four is reviewed and then its extension to dimension six for the symplectic case is explained. Finally some examples in dimension six are provided.

Geometric Topology · Mathematics 2013-06-06 Ahmet Beyaz

We give a generalization of toric symplectic geometry to Poisson manifolds which are symplectic away from a collection of hypersurfaces forming a normal crossing configuration. We introduce the tropical momentum map, which takes values in a…

Symplectic Geometry · Mathematics 2017-03-13 Marco Gualtieri , Songhao Li , Alvaro Pelayo , Tudor Ratiu

The aim of this note is to present a construction of symplectic structures on orientable globally hyperbolic 4-dimensional lorentzian manifolds. Said structures are defined on the manifold itself, not on its cotangent bundle. It also…

General Mathematics · Mathematics 2025-10-13 Romero Solha

We survey some recent developments in the quest for global surfaces of section for Reeb flows in dimension three using methods from Symplectic Topology. We focus on applications to geometry, including existence of closed geodesics and sharp…

Symplectic Geometry · Mathematics 2020-01-20 Umberto L. Hryniewicz , Pedro A. S. Salomão

This article analyzes the interplay between symplectic geometry in dimension four and the invariants for smooth four-manifolds constructed using holomorphic triangles introduced in math.SG/0110169. Specifically, we establish a non-vanishing…

Symplectic Geometry · Mathematics 2007-05-23 P. S. Ozsvath , Z. Szabo

These are notes of the lectures given during the Toric Topology Workshop at the Korea Advanced Institute of Science and Technology in February 2010. We describe several approaches to moment-angle manifolds and complexes, including the…

Algebraic Topology · Mathematics 2010-10-18 Taras Panov

We construct a distance on the moduli space of symplectic toric manifolds of dimension four. Then we study some basic topological properties of this space, in particular, path-connectedness, compactness, and completeness. The construction…

Symplectic Geometry · Mathematics 2016-11-03 Álvaro Pelayo , Ana Rita Pires , Tudor S. Ratiu , Silvia Sabatini

Symplectic and complex toric quasifolds are a generalization of toric manifolds and orbifolds to the nonrational case. In this paper, we reframe these notions from the viewpoint of algebraic geometry.

Algebraic Geometry · Mathematics 2026-04-17 Fiammetta Battaglia , Elisa Prato

We define 2-calibrated structures, which are analogs of symplectic structures in odd dimensions. We show the existence of differential topological constructions compatible with the structure.

Differential Geometry · Mathematics 2018-07-31 David Martinez Torres

This lecture is devoted to review some of the main properties of multisymplectic geometry. In particular, after reminding the standard definition of multisymplectic manifold, we introduce its characteristic submanifolds, the canonical…

Mathematical Physics · Physics 2019-12-02 Narciso Román-Roy

In symplectic topology one uses elliptic methods to prove rigidity results about symplectic manifolds and solutions of Hamiltonian equations on them, where the most basic example is given by geodesics on Riemannian manifolds. Harmonic maps…

Symplectic Geometry · Mathematics 2025-09-30 Ronen Brilleslijper , Oliver Fabert

This is an exposition of the Donaldson geometric flow on the space of symplectic forms on a closed smooth four-manifold, representing a fixed cohomology class. The original work appeared in [1].

Symplectic Geometry · Mathematics 2019-07-22 Robin S. Krom , Dietmar A. Salamon

On the base of symplectic quantum tomogram we define a probability distribution on the plane. The dual map transfers all observables which are polynomials of the position and momentum operators to the set of polynomials of two variables. In…

Quantum Physics · Physics 2015-03-17 Grigori G. Amosov , Andrey I. Dnestryan

In this paper, we introduce a new kind of Siegel upper half space and consider the symplectic geometry on it explicitly under the action of the group of all holomorphic transformations of it. The results and methods will form a basis for…

Symplectic Geometry · Mathematics 2016-01-19 Tianqin Wang , Tianze Wang , Hongwen Lu

A symplectic toric orbifold is a compact connected orbifold $M$, a symplectic form $\omega$ on $M$, and an effective Hamiltonian action of a torus $T$ on $M$, where the dimension of $T$ is half the dimension of $M$. We prove that there is a…

dg-ga · Mathematics 2008-02-03 Eugene Lerman , Susan Tolman

We study the general form of the possible kinetic terms for 2-form fields in four dimensions, under the restriction that they have a semibounded energy density. This is done by using covariant symplectic techniques and generalizes previous…

High Energy Physics - Theory · Physics 2009-11-07 J. Fernando Barbero G. , Eduardo J. S. Villaseñor

The purpose of this paper is to investigate the following problem: For a fixed 2-dimensional homology class K in a simply connected symplectic 4-manifold, up to smooth isotopy, how many connected smoothly embedded symplectic submanifolds…

Symplectic Geometry · Mathematics 2007-05-23 Ronald Fintushel , Ronald J. Stern

We usually think of 2-dimensional manifolds as surfaces embedded in Euclidean 3-space. Since humans cannot visualise Euclidean spaces of higher dimensions, it appears to be impossible to give pictorial representations of higher-dimensional…

Geometric Topology · Mathematics 2017-10-10 Hansjörg Geiges