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Related papers: Strongly overtwisted contact 3-manifolds

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In this paper we prove that the closed $4$-ball admits non-K\"ahler complex structures with strictly pseudoconcave boundary. Moreover, the induced contact structure on the boundary $3$-sphere is overtwisted.

Complex Variables · Mathematics 2023-08-02 Naohiko Kasuya , Daniele Zuddas

We study integrability of generalized almost contact structures, and find conditions under which the main associated maximal isotropic vector bundles form Lie bialgebroids. These conditions differentiate the concept of generalized contact…

Differential Geometry · Mathematics 2014-02-26 Yat Sun Poon , Aissa Wade

In this work, we prove that every complex contact structure gives rise to a distinguished type of almost contact metric 3-structure. As an application of our main result, we provide several new examples of manifolds which admit taut contact…

Differential Geometry · Mathematics 2020-09-24 Eder M. Correa

We define invariants of null--homologous Legendrian and transverse knots in contact 3--manifolds. The invariants are determined by elements of the knot Floer homology of the underlying smooth knot. We compute these invariants, and show that…

Symplectic Geometry · Mathematics 2009-04-21 Paolo Lisca , Peter Ozsváth , András I. Stipsicz , Zoltán Szabó

This paper uses convex integration with avoidance and transversality arguments to prove the relative $h$-principle for closed $\mathrm{SL}(3;\mathbb{R})^2$ 3-forms on oriented 6-manifolds. As corollaries, it is proven that if an oriented…

Geometric Topology · Mathematics 2026-01-15 Laurence H. Mayther

In this paper, we study and almost completely classify contact structures on closed 3--manifolds which are totally geodesic for some Riemannian metric. Due to previously known results, this amounts to classifying contact structures on…

Geometric Topology · Mathematics 2014-11-11 Patrick Massot

In this article we give a sharp upper bound on the possible values of the Euler characteristic for a minimal symplectic filling of a tight contact structure on a lens space. This estimate is obtained by looking at the topology of the spaces…

Geometric Topology · Mathematics 2020-03-31 Edoardo Fossati

We construct a simple topological invariant of certain 3-manifolds, including quotients of the 3-sphere by finite groups, based on the fact that the tangent bundle of an orientable 3-manifold is trivialisable. This invariant is strong…

Geometric Topology · Mathematics 2007-05-23 Siddhartha Gadgil

Using recent work on high dimensional Lutz twists and families of Weinstein structures we show that any almost contact structure on a 5-manifold is homotopic to a contact structure.

Symplectic Geometry · Mathematics 2013-02-05 John B. Etnyre

In the first part of this paper, we construct infinitely many hyperbolic closed 3-manifolds which admit no symplectic fillable contact structure. All these 3-manifolds are obtained by Dehn surgeries along L-space knots or L-space…

Geometric Topology · Mathematics 2025-02-26 Fan Ding , Youlin Li , Zhongtao Wu

It is a basic question in contact geometry to classify all non-isotopic tight contact structures on a given 3-manifold. If the manifold has a boundary, we need also specify the dividing set on the boundary. In this paper, we answer the…

Geometric Topology · Mathematics 2020-07-24 Zhenkun Li , Jessica J. Zhang

In this paper, we explore minimal contact triangulations on contact 3-manifolds. We give many explicit examples of contact triangulations that are close to minimal ones. The main results of this article say that on any closed oriented…

Geometric Topology · Mathematics 2016-08-15 Basudeb Datta , Dheeraj Kulkarni

We execute Avdek's algorithm to find many algebraically overtwisted and tight $3$-manifolds by contact $+1$ surgeries. In particular, we show that a contact $1/k$ surgery on the standard contact $3$-sphere along any positive torus knot with…

Symplectic Geometry · Mathematics 2024-11-01 Youlin Li , Zhengyi Zhou

We prove that every homotopy class of almost contact structures on a closed 5-dimensional manifold admits a contact structure.

Symplectic Geometry · Mathematics 2014-11-10 Roger Casals , Dishant M. Pancholi , Francisco Presas

This article describes various moduli spaces of pseudoholomorphic curves on the symplectization of a particular overtwisted contact structure on S^1 x S^2. This contact structure appears when one considers a closed self dual form on a…

Geometric Topology · Mathematics 2014-11-11 Clifford Henry Taubes

We prove gluing theorems for tight contact structures. In particular, we rederive (as special cases) gluing theorems due to Colin and Makar-Limanov, and present an algorithm for determining whether a given contact structure on a handlebody…

Geometric Topology · Mathematics 2007-05-23 Ko Honda

The main purpose of this article is to classify contact structures on some 3-manifolds, namely lens spaces, most torus bundles over a circle, the solid torus, and the thickened torus T^2 x [0,1]. This classification completes earlier work…

Geometric Topology · Mathematics 2009-10-31 Emmanuel Giroux

We investigate the $h$-principle problem for fat distributions. These are maximally non-integrable distributions with natural symplectisations and contactisations, that generalize contact distributions to higher corank. We focus on the…

Symplectic Geometry · Mathematics 2025-11-25 Eduardo Fernández , Álvaro del Pino , Wei Zhou

We give an alternative proof of a theorem of Honda-Kazez-Mati\'c that every non-right-veering open book supports an overtwisted contact structure. We also study two types of examples that show how overtwisted discs are embedded relative to…

Geometric Topology · Mathematics 2013-10-25 Tetsuya Ito , Keiko Kawamuro

It is still not known whether a hyperbolic 3-manifold admits an angle structure or not. We consider angle structures with area-curvature on triangulated pseudo 3-manifolds M in this article. A suficient and necessary condition for the…

Geometric Topology · Mathematics 2025-02-18 Huabin Ge , Longsong Jia , Faze Zhang
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