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We introduce cosymplectic circles and cosymplectic spheres, which are the analogues in the cosymplectic setting of contact circles and contact spheres. We provide a complete classification of compact 3-manifolds that admit a cosymplectic…

Differential Geometry · Mathematics 2015-12-11 Beniamino Cappelletti-Montano , Antonio De Nicola , Ivan Yudin

After observing that the well-known convexity theorems of symplectic geometry also hold for compact contact manifolds with an effective action of a torus whose Reeb vector field corresponds to an element of the Lie algebra of the torus, we…

Differential Geometry · Mathematics 2009-10-31 Charles P. Boyer , Krzysztof Galicki

A list of open problems on holomorphic symplectic, contact and Poisson manifolds.

Algebraic Geometry · Mathematics 2010-02-24 Arnaud Beauville

These notes are based on a course that took place at the Universit\'e de Nantes in June 2011 during the "Trimester on Contact and Symplectic Topology". We will explain how holomorphic curves can be used to study symplectic fillings of a…

Symplectic Geometry · Mathematics 2014-08-06 Klaus Niederkrüger

Geometric optics is analysed using the techniques of Presymplectic Geometry. We obtain the symplectic structure of the space of light rays in a medium of a non constant refractive index by reduction from a presymplectic structure, and using…

High Energy Physics - Theory · Physics 2009-10-30 Jose F. Cariñena , J. Nasarre

We define \emph{$0$-shifted} and \emph{$+1$-shifted contact structures} on differentiable stacks, thus laying the foundations of \emph{shifted Contact Geometry}. As a side result we show that the kernel of a multiplicative $1$-form on a Lie…

Differential Geometry · Mathematics 2024-07-02 Antonio Maglio , Alfonso G. Tortorella , Luca Vitagliano

This paper introduces a new class of geometric structures in almost contact metric geometry, which we call locally conformal almost generalized $f$-cosymplectic manifolds. These are almost contact metric structures $(\phi, \xi, \eta, g)$…

Differential Geometry · Mathematics 2026-01-27 Fortuné Massamba , Jude Rosnick Bayeni Mitoueni

Symplectic field theory (SFT) is a collection of homology theories that provide invariants for contact manifolds. We give a proof that vanishing of any one of either contact homology, rational SFT or (full) SFT are equivalent. We call a…

Symplectic Geometry · Mathematics 2010-02-14 Frédéric Bourgeois , Klaus Niederkrüger

Special Bohr - Sommerfeld geometry, first formulated for simply connected symplectic manifolds (or for simple connected algebraic varieties), gives rise to some natural problems for the simplest example in non simply connected case. Namely…

Algebraic Geometry · Mathematics 2016-10-26 Nikolai A. Tyurin

In this note we make several observations concerning symplectic fillings. In particular we show that a (strongly or weakly) semi-fillable contact structure is fillable and any filling embeds as a symplectic domain in a closed symplectic…

Symplectic Geometry · Mathematics 2014-10-01 John B Etnyre

Iterated planar contact manifolds are a generalization of three dimensional planar contact manifolds to higher dimensions. We study some basic topological properties of iterated planar contact manifolds and discuss several examples and…

Symplectic Geometry · Mathematics 2024-02-05 Bahar Acu , John B. Etnyre , Burak Ozbagci

In order to get the classical analogue of quantum interaction picture in classical symplectic geometric description, the space of solutions of free equations of motion is suggested to replace the phase space in $T^{*}Q$ description or the…

Mathematical Physics · Physics 2007-05-23 M. X Shao , Z. Y. Zhu

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 on symplectic birational geometry. In arbitrary dimension, this subject is centered around the notion of uniruledness. In low dimensions, we will also discuss Kodaira dimension and minimality.

Symplectic Geometry · Mathematics 2009-06-18 Tian-Jun Li , Yongbin Ruan

This note collects a number of standard statements in Riemannian geometry and in Sobolev-space theory that play a prominent role in analytic approaches to symplectic topology. These include relations between connections and complex…

Symplectic Geometry · Mathematics 2010-12-20 Aleksey Zinger

We present a new approach for constructing covariant symplectic structures for geometrical theories, based on the concept of adjoint operators. Such geometric structures emerge by direct exterior derivation of underlying symplectic…

Mathematical Physics · Physics 2016-09-07 R. Cartas-Fuentevilla

Parabolic almost conformally symplectic structures were introduced in the first part of this series of articles as a class of geometric structures which have an underlying almost conformally symplectic structure. If this underlying…

Differential Geometry · Mathematics 2018-09-21 Andreas Cap , Tomas Salac

We consider certain type of fiber bundles with odd dimensional compact contact base, exact symplectic fibers, and the structure group contained in the group of exact symplectomorphisms of the fiber. We call such fibrations "contact…

Geometric Topology · Mathematics 2014-03-24 M. Firat Arikan

Let (m,b) a pair of natural numbers. For m even (resp. m odd and b greater than or equal to 2) we show that if there is an m-dimensional non-formal compact oriented manifold whose first Betti number equals b, there is also a symplectic…

Symplectic Geometry · Mathematics 2023-12-12 Christoph Bock

In this paper we address what generalized geometric structures are possible on products of spaces that each admit generalized geometries. In particular we consider, first, the product of two odd dimensional spaces that each admit a…

Differential Geometry · Mathematics 2024-09-17 Ralph R. Gomez , Janet Talvacchia