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In this paper, we provide new and simpler proofs of two theorems of Gluck and Harrison on contact structures induced by great circle or line fibrations. Furthermore, we prove that a geodesic vector field whose Jacobi tensor is parallel…

Symplectic Geometry · Mathematics 2024-03-20 Tilman Becker

For typical cocycles over subshifts of finite type, we show that for any given orbit segment, we can construct a periodic orbit such that it shadows the given orbit segment and that the product of the cocycle along its orbit is a proximal…

Dynamical Systems · Mathematics 2022-01-25 Kiho Park

The first result of this paper is that every contact form on $\mathbb{R} P^3$ sufficiently $C^\infty$-close to a dynamically convex contact form admits an elliptic-parabolic closed Reeb orbit which is $2$-unknotted, has self-linking number…

Symplectic Geometry · Mathematics 2016-04-12 Umberto L. Hryniewicz , Pedro A. S. Salomão

We prove that in dimension 3 every nondegenerate contact form is carried by a broken book decomposition. As an application we get that if M is a closed irreducible oriented 3-manifold that is not a graph manifold, for example a hyperbolic…

Dynamical Systems · Mathematics 2022-03-10 Vincent Colin , Pierre Dehornoy , Ana Rechtman

We use Lerman's contact cut construction to find a sufficient condition for Hamiltonian diffeomorphisms of compact surfaces to embed into a closed 3-manifold as Poincar\'e return maps on a global surface of section for a Reeb flow. In…

Dynamical Systems · Mathematics 2023-02-07 Peter Albers , Hansjörg Geiges , Kai Zehmisch

This paper helps to clarify the status of cylindrical contact homology, a conjectured contact invariant introduced by Eliashberg, Givental, and Hofer in 2000. We explain how heuristic arguments fail to yield a well-defined homological…

Symplectic Geometry · Mathematics 2015-06-16 Jo Nelson

We introduce a notion of positive pair of contact structures on a 3-manifold which generalizes a previous definition of Eliashberg-Thurston and Mitsumatsu. Such a pair gives rise to a locally integrable plane field $\lambda$. We prove that…

Symplectic Geometry · Mathematics 2014-10-01 Vincent Colin , Sebastiao Firmo

We show the existence of a contractible periodic Reeb orbit for any contact structure supported by an open book whose binding can be realised as a hypersurface of restricted contact type in a subcritical Stein manifold. A key ingredient in…

Symplectic Geometry · Mathematics 2019-03-11 Max Dörner , Hansjörg Geiges , Kai Zehmisch

We established existence of periodic Reeb orbits for a large class of tight contact structures on closed 3-manifolds, notably the Stein fillable structures, based on a fundamental theorem of Cliff Taubes on symplectic 4-manifolds.

dg-ga · Mathematics 2008-02-03 Weimin Chen

We survey some results on the existence (and non-existence) of periodic Reeb orbits on contact manifolds, both in the open and closed case. We place these statements in the context of Finsler geometry by including a proof of the folklore…

Dynamical Systems · Mathematics 2019-03-12 Max Dörner , Hansjörg Geiges , Kai Zehmisch

We prove that certain non-exact magnetic Hamiltonian systems on products of closed hyperbolic surfaces and with a potential function of large oscillation admit non-constant contractible periodic solutions of energy below the Ma\~n\'e…

Symplectic Geometry · Mathematics 2020-08-17 Youngjin Bae , Kevin Wiegand , Kai Zehmisch

In this paper, we compute contact homology of some quasi-regular contact structures, which admit Hamiltonian actions of Reeb type of Lie groups. We will discuss the toric contact case, (where the torus is of Reeb type), and the case of…

Symplectic Geometry · Mathematics 2009-11-02 Justin Pati

We prove that every nondegenerate contact form on a closed connected three-manifold, such that the associated contact structure has torsion first Chern class, has either two or infinitely many simple Reeb orbits. By previous results it…

Symplectic Geometry · Mathematics 2020-01-08 Dan Cristofaro-Gardiner , Michael Hutchings , Dan Pomerleano

This paper is the sequel to the previous paper [Ne15], which showed that sufficient regularity exists to define cylindrical contact homology in dimension three for nondegenerate dynamically separated contact forms, a subclass of dynamically…

Symplectic Geometry · Mathematics 2019-11-13 Jo Nelson

In this paper, we prove that every graphical hypersurface in a prequantization bundle over a symplectic manifold $M$, pinched between two circle bundles whose ratio of radii is less than $\sqrt{2}$ carries either one short simple periodic…

Symplectic Geometry · Mathematics 2018-05-22 Peter Albers , Jean Gutt , Doris Hein

In this paper we give a rigorous definition of cylindrical contact homology for contact $3$-manifolds that admit nondegenerate contact forms with no contractible Reeb orbits, and show that the cylindrical contact homology is an invariant of…

Symplectic Geometry · Mathematics 2018-09-19 Erkao Bao , Ko Honda

We discuss the occurrence of some notions and results from contact topology in the non-equilibrium thermodynamics. This includes the Reeb chords and the partial order on the space of Legendrian submanifolds.

Symplectic Geometry · Mathematics 2026-02-04 Michael Entov , Leonid Polterovich , Lenya Ryzhik

We give a sharp lower bound for the number of geometrically distinct contractible periodic orbits of dynamically convex Reeb flows on prequantizations of symplectic manifolds that are not aspherical. Several consequences of this result are…

Symplectic Geometry · Mathematics 2016-11-03 Miguel Abreu , Leonardo Macarini

The first two authors showed in~\cite{AM1} how the Conley-Zehnder index of any contractible periodic Reeb orbit of a non-degenerate toric contact form on a good toric contact manifold with zero first Chern class, i.e. a Gorenstein toric…

Symplectic Geometry · Mathematics 2022-01-21 Miguel Abreu , Leonardo Macarini , Miguel Moreira

Let $M$ be a connected compact contact toric manifold. Most of such manifolds are of Reeb type. We show that if $M$ is of Reeb type, then $\pi_1(M)$ is finite cyclic, and we describe how to obtain the order of $\pi_1(M)$ from the moment map…

Symplectic Geometry · Mathematics 2023-08-30 Hui Li
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