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Given a fibred hyperbolic 3-manifold with boundary, we coarsely relate the Euclidean geometry of its cusps to the classical fractional Dehn twist coefficient of its monodromy. This result fits into the broader programme of coarsely…

Geometric Topology · Mathematics 2024-11-15 Misha Schmalian

We prove that any weakly symplectically fillable contact manifold is tight. Furthermore we verify the strong Weinstein conjecture for contact manifolds that appear as the concave boundary of a directed symplectic cobordism whose positive…

Symplectic Geometry · Mathematics 2025-04-29 Wolfgang Schmaltz , Stefan Suhr , Kai Zehmisch

We describe explicit open books on arbitrary plumbings of oriented circle bundles over closed oriented surfaces. We show that, for a non-positive plumbing, the open book we construct is horizontal and the corresponding compatible contact…

Geometric Topology · Mathematics 2007-05-23 Tolga Etgü , Burak Ozbagci

We show that every open book decomposition of a contact 3-manifold can be represented (up to isotopy) by a smooth R-invariant family of pseudoholomorphic curves on its symplectization with respect to a suitable stable Hamiltonian structure.…

Symplectic Geometry · Mathematics 2009-06-24 Chris Wendl

This article presents an alternate way to prove a result originally proven by Harvey, Kawamuro, and Plamenvskaya in \cite{HaKaPl}. We accomplish this by explicitly constructing an overtwisted disk in the $p$-fold cyclic branched cover of…

Geometric Topology · Mathematics 2024-05-24 Jose Ceniceros

In this paper we prove the presence of an embedded plastikstufe implies overtwistedness of the contact structure in any dimension. Moreover, we show in dimension 5 that the presence of an embedded bordered Legendrian open book (bLob) also…

Symplectic Geometry · Mathematics 2017-06-28 Yang Huang

We describe explicit horizontal open books on some Seifert fibered 3--manifolds. We show that the contact structures compatible with these horizontal open books are Stein fillable and horizontal as well. Moreover we draw surgery diagrams…

Geometric Topology · Mathematics 2012-06-22 Burak Ozbagci

We exhibit infinitely many overtwisted, right-veering, non-destabilizable open books, thus providing infinitely many counterexamples to a conjecture of Honda-Kazez-Matic. The page of all our open books is a four-holed sphere and the…

Geometric Topology · Mathematics 2012-01-04 Paolo Lisca

We introduce a modification procedure for Engel structures that is reminiscent of the Lutz twist in 3-dimensional Contact Topology. This notion allows us to define what an Engel overtwisted disc is, and to prove a complete h-principle for…

Symplectic Geometry · Mathematics 2021-01-06 Álvaro del Pino , Thomas Vogel

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

A foliation is said to admit a foliated contact structure if there is a codimension 1 distribution in the tangent space of the foliation such that the restriction to any leaf is contact. We prove a version of the Weinstein conjecture in the…

Symplectic Geometry · Mathematics 2015-09-18 Álvaro del Pino , Francisco Presas

Morse foliated open books were introduced by the autors (along with abstract and embedded versions) as a tool for studying contact manifolds with boundary, and this article illustrates the advantages of the Morse perspective. We use this to…

Geometric Topology · Mathematics 2022-11-02 Joan E. Licata , Vera Vértesi

We give an elementary topological obstruction for a manifold $M$ of dimension $2q{+}1 \geq 7$ to admit a contact open book with flexible Weinstein pages and $c_1(\pi_2(M)) = 0$: if the torsion subgroup of the $q$-th integral homology group…

Geometric Topology · Mathematics 2023-01-23 Jonathan Bowden , Diarmuid Crowley

We establish geometric criteria to decide whether a contact manifold is overtwisted. Starting with the original definition, we first relate the different overtwisted disks in each dimension and show that a manifold is overtwisted if the…

Symplectic Geometry · Mathematics 2018-11-22 Roger Casals , Emmy Murphy , Francisco Presas

In this paper, we introduce the notions of an iterated planar Lefschetz fibration and an iterated planar open book decomposition and prove the Weinstein conjecture for contact manifolds supporting an open book that has iterated planar…

Symplectic Geometry · Mathematics 2017-10-24 Bahar Acu

Plastikstufes and overtwistedness for higher-dimensional contact manifolds are studied in this paper. It is proved that a contact structure is overtwisted if and only if there exists a small plastikstufe with toric core that has trivial…

Geometric Topology · Mathematics 2016-09-06 Jiro Adachi

In the present paper we describe compatible open books for the fibre connected sum along binding components of open books, as well as for the fibre connected sum along multi-sections of open books. As an application the first description…

Geometric Topology · Mathematics 2016-07-20 Mirko Klukas

We classify convex disks with a fixed characteristic foliation and Legendrian boundary, up to contact isotopy relative to the boundary, in every closed overtwisted contact 3-manifold. This classification covers cases where the neighborhood…

Geometric Topology · Mathematics 2025-01-17 Dahyana Farias , Eduardo Fernández , Francisco Presas , Guillermo Sánchez-Arellano

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

We initiate the study of the monoid of right-veering diffeomorphisms on a compact oriented surface with nonempty boundary. The monoid strictly contains the monoid of products of positive Dehn twists. We explain the relationship to tight…

Geometric Topology · Mathematics 2007-05-23 Ko Honda , William H. Kazez , Gordana Matic