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We consider the problem of realizing tight contact structures on closed orientable three-manifolds. By applying the theorems of Hofer et al., one may deduce tightness from dynamical properties of (Reeb) flows transverse to the contact…

Differential Geometry · Mathematics 2007-05-23 John Etnyre , Robert Ghrist

We prove some open book embedding results in the contact category. For example, we show that a large class of contact 3-manifolds admit contact open book embedding in the standard contact 5- sphere. We also prove that all the Ustilovsky (4m…

Symplectic Geometry · Mathematics 2020-05-21 Kuldeep Saha

We present a sketch of the proof of the following theorems: (1) Every 3-manifold has only finitely many homotopy classes of 2-plane fields which carry tight contact structures. (2) Every closed atoroidal 3-manifold carries finitely many…

Geometric Topology · Mathematics 2007-05-23 Vincent Colin , Emmanuel Giroux , Ko Honda

An open book decomposition of a 3-manifold $M$ induces a Heegaard splitting for $M$, and the minimal genus among all Heegaard splittings induced by open book decompositions is called the \emph{open book genus} of $M$. It is conjectured by…

Geometric Topology · Mathematics 2017-02-24 Mustafa Cengiz

We produce a large class of hyperbolic homology 3-spheres admitting arbitrarily many distinct tight contact structures. We also produce a sub-class admitting arbitrarily many distinct tight contact structures within the same homotopy class…

Geometric Topology · Mathematics 2024-05-29 Mahan Mj , Balarka Sen

We show that the canonical contact structure on the link of a normal complex singularity is universally tight. As a corollary we show the existence of closed, oriented, atoroidal 3-manifolds with infinite fundamental groups which carry…

Geometric Topology · Mathematics 2012-06-13 Yanki Lekili , Burak Ozbagci

We show that any co-orientable foliation of dimension two on a closed orientable $3$-manifold with continuous tangent plane field can be $C^0$-approximated by both positive and negative contact structures unless all the leaves are simply…

Geometric Topology · Mathematics 2016-09-27 Jonathan Bowden

Using contact homology, we reobtain some recent results of Geiges and Gonzalo about the fundamental group of the space of contact structures on some 3-manifolds. We show that our techniques can be used to study higher dimensional contact…

Symplectic Geometry · Mathematics 2007-05-23 Frédéric Bourgeois

The object of investigations are almost contact B-metric structures on 3-dimensional Lie groups considered as smooth manifolds. There are established the existence and some geometric characteristics of these manifolds in all basic classes.…

Differential Geometry · Mathematics 2015-06-23 Hristo Manev , Dimitar Mekerov

The contact invariant is an element in the monopole Floer homology groups of an oriented closed three manifold canonically associated to a given contact structure. A non-vanishing contact invariant implies that the original contact…

Geometric Topology · Mathematics 2020-07-29 Mariano Echeverria

By use of a variety of techniques (most based on constructions of quasipositive knots and links, some old and others new), many smooth 3-manifolds are realized as transverse intersections of complex surfaces in complex 3-space with strictly…

Geometric Topology · Mathematics 2015-08-21 Lee Rudolph

This article sketches various ideas in contact geometry that have become useful in low-dimensional topology. Specifically we (1) outline the proof of Eliashberg and Thurston's results concerning perturbations of foliatoins into contact…

Geometric Topology · Mathematics 2007-05-23 John B. Etnyre

In the spirit of Sullivan's paper "Cycles for the Dynamical Study of Foliated Manifolds and Complex Manifolds", existence of a contact structure on a closed manifold $M$ is shown to be equivalent to existence of an ample $S^1$-invariant…

Differential Geometry · Mathematics 2015-12-14 Mélanie Bertelson , Cédric De Groote

We prove that a nicely fibered link (by which we mean the binding of an open book) in a tight contact manifold $(M,\xi)$ with zero Giroux torsion has a transverse representative realizing the Bennequin bound if and only if the contact…

Symplectic Geometry · Mathematics 2009-07-09 John B. Etnyre , Jeremy Van Horn-Morris

In 1989, Y. Eliashberg proved that two overtwisted contact structures on a closed oriented 3-manifold are isotopic if and only if they are homotopic as 2-plane fields. We provide an alternative proof of this theorem using the convex surface…

Geometric Topology · Mathematics 2012-08-03 Yang Huang

We consider the existence of symplectic and conformal symplectic codimension-one foliations on closed manifolds of dimension at least 5. Our main theorem, based on a recent result by Bertelson-Meigniez, states that in dimension at least 7…

Symplectic Geometry · Mathematics 2021-11-02 Fabio Gironella , Lauran Toussaint

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 construct (infinitely many) examples in all dimensions of contactomorphisms of closed overtwisted contact manifolds that are smoothly isotopic but not contact-isotopic to the identity.

Symplectic Geometry · Mathematics 2019-05-29 Fabio Gironella

The aim of this paper is to use mapping class group relations to approach the `geography' problem for Stein fillings of a contact 3-manifold. In particular, we adapt a formula of Endo and Nagami so as to calculate the signature of such…

Geometric Topology · Mathematics 2014-02-26 Andy Wand

We consider singular foliations of codimension one on 3-manifolds, in the sense defined by A. Haefliger as being Gamma_1-structures. We prove that under the obvious linear embedding condition, they are Gamma_1-homotopic to a regular…

Geometric Topology · Mathematics 2012-10-18 Francois Laudenbach , Gael Gael Meigniez