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Determining the associated metrics we get a local classification of contact metric three manifolds.

Differential Geometry · Mathematics 2007-05-23 Karatsobanis John

We survey the interactions between foliations and contact structures in dimension three, with an emphasis on sutured manifolds and invariants of sutured contact manifolds. This paper contains two original results: the fact that a closed…

Symplectic Geometry · Mathematics 2018-11-26 Vincent Colin , Ko Honda

A rigorous foundation for the contact homology of Legendrian submanifolds in a contact manifold of the form $P\times \R$ where $P$ is an exact symplectic manifold is established. The class of such contact manifolds include 1-jet spaces of…

Symplectic Geometry · Mathematics 2007-05-23 Tobias Ekholm , John Etnyre , Michael G. Sullivan

In this note, we consider contractible loops of contactomorphisms that are positive over some non-empty closed subset of a contact manifold. Such closed subsets are called immaterial. We argue that the complement of a Reeb-invariant…

Symplectic Geometry · Mathematics 2026-05-20 Igor Uljarević

Embedded contact homology (ECH) is a kind of Floer homology for contact three-manifolds. Taubes has shown that ECH is isomorphic to a version of Seiberg-Witten Floer homology (and both are conjecturally isomorphic to a version of Heegaard…

Symplectic Geometry · Mathematics 2010-03-17 Michael Hutchings

The purpose of this paper is to give a survey of the various versions of Floer homology for manifolds with contact type boundary that have so far appeared in the literature. Under the name of ``Symplectic homology'' or ``Floer homology for…

Symplectic Geometry · Mathematics 2007-05-23 Alexandru Oancea

We define a notion of Heegaard Floer homology for three dimensional orbifolds with arbitrary cyclic singularities, generalizing the recent work of Biji Wong where the singular locus is assumed to be connected.

Geometric Topology · Mathematics 2024-02-14 Saibal Ganguli , Mainak Poddar

In this paper, we study on semi-invariant submanifolds of normal complex contact metric manifolds. We give the definition of such submanifolds and we obtain useful relations. Moreover, we give the integrability conditions of distributions.

Differential Geometry · Mathematics 2020-08-05 Aysel Turgut Vanli , Inan Unal

We use contact handle decompositions and a stabilization process to compute the cylindrical contact homology of a subcritical Stein-fillable contact manifold with vanishing first Chern class, and show that it is completely determined by the…

Symplectic Geometry · Mathematics 2014-11-11 Mei-Lin Yau

We classify contact toric 3-manifolds up to contactomorphism, through explicit descriptions, building off of work by Lerman [Lerman03]. As an application, we classify all contact structures on 3-manifolds that can be realised as a concave…

Symplectic Geometry · Mathematics 2025-01-17 Aleksandra Marinković , Laura Starkston

It is known that every contact form on a closed three-manifold has at least two simple Reeb orbits, and a generic contact form has infinitely many. We show that if there are exactly two simple Reeb orbits, then the contact form is…

Symplectic Geometry · Mathematics 2023-12-13 Dan Cristofaro-Gardiner , Umberto Hryniewicz , Michael Hutchings , Hui Liu

We study low-dimensional problems in topology and geometry via a study of contact and Cauchy-Riemann ($CR$) structures. A contact structure is called spherical if it admits a compatible spherical $CR$ structure. We will talk about spherical…

Symplectic Geometry · Mathematics 2007-05-23 Jih-Hsin Cheng

We give a formula of 3-dimensional invariant for a cyclic contact branched covering of the standard contact S^{3}.

Geometric Topology · Mathematics 2017-04-10 Tetsuya Ito

A complex contact threefold is a threefold with a two-dimensional non-integrable holomorphic distribution. A contact curve on a contact threefold is an integrable curve of the distribution. This work was inspired by two papers of Bryant, in…

alg-geom · Mathematics 2008-02-03 Yun-Gang Ye

In this note we observe, answering a question of Eliashberg and Thurston, that all contact structures on a closed oriented 3-manifold are $C^\infty$-deformations of foliations.

Symplectic Geometry · Mathematics 2007-05-23 John B. Etnyre

An important class of contact 3--manifolds are those that arise as links of rational surface singularities with reduced fundamental cycle. We explicitly describe symplectic caps (concave fillings) of such contact 3--manifolds. As an…

Symplectic Geometry · Mathematics 2010-09-24 David T. Gay , Andras I. Stipsicz

We establish a parametric extension $h$-principle for overtwisted contact structures on manifolds of all dimensions, which is the direct generalization of the $3$-dimensional result from \cite{Eli89}. It implies, in particular, that any…

Symplectic Geometry · Mathematics 2014-10-14 Matthew Strom Borman , Yakov Eliashberg , Emmy Murphy

We prove every oriented compact cyclic $3$-orbifold has a contact structure. There is another proof in the web by Daniel Herr in his uploaded thesis which depends on open book decompositions, ours is independent of that. We define…

Algebraic Topology · Mathematics 2015-12-24 Saibal Ganguli

Contact homology for Legendrian submanifolds in standard contact $(2n+1)$-space is rigorously defined using moduli spaces of holomorphic disks with Lagrangian boundary conditions in complex $n$-space. It provides new invariants of…

Symplectic Geometry · Mathematics 2007-05-23 Tobias Ekholm , John Etnyre , Michael G. Sullivan

Contact Geometry is an odd dimensional analogue of Symplectic Geometry. This vague idea can actually be formalized in a rather precise way by means of a Symplectic-to-Contact Dictionary. The aim of this review paper is discussing the basic…

Differential Geometry · Mathematics 2026-02-02 Fabrizio Pugliese , Giovanni Sparano , Luca Vitagliano