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We show that every (possibly degenerate) contact form on a closed three-manifold has at least two embedded Reeb orbits. We also show that if there are only finitely many embedded Reeb orbits, then their symplectic actions are not all…

Symplectic Geometry · Mathematics 2014-01-07 Daniel Cristofaro-Gardiner , Michael Hutchings

Our purpose here is to adapt the results of Geodesic circle foliations for Reeb flows or Hamiltonian flows on contact manifolds. Consequently, all periods are exactly the same if the contact manifold is connected and all orbits on the…

Mathematical Physics · Physics 2024-09-04 Yoshihisa Miyanishi

In this paper, we prove that there exists a residual subset of contact forms $\lambda$ (if any) on a compact connected orientable manifold $M$ for which the foliation de Rham cohomology of the associated Reeb foliation $F_\lambda$ is…

Symplectic Geometry · Mathematics 2025-05-13 Yong-Geun Oh

We characterize which closed Reeb orbits of a dynamically convex contact form on the 3-sphere bound disk-like global surfaces of section for the Reeb flow, without any genericity assumptions. We show that these global surfaces of section…

Symplectic Geometry · Mathematics 2015-02-09 Umberto Hryniewicz

In this article, we investigate Reeb dynamics on $b^m$-contact manifolds, previously introduced in [MiO], which are contact away from a hypersurface $Z$ but satisfy certain transversality conditions on $Z$. The study of these contact…

Symplectic Geometry · Mathematics 2023-06-16 Eva Miranda , Cédric Oms

We prove the existence of an elliptic Reeb orbit for some contact forms on the real projective three space $\mathbb{R} P^3$. The main ingredient of the proof is the existence of a distinguished pseudoholomorphic curve in the symplectization…

Symplectic Geometry · Mathematics 2025-06-11 Brayan Ferreira

We study the existence of multiple closed Reeb orbits on some contact manifolds by means of $S^1$-equivariant symplectic homology and the index iteration formula. It is proved that a certain class of contact manifolds which admit…

Symplectic Geometry · Mathematics 2014-10-16 Jungsoo Kang

As a refinement of the Weinstein conjecture, it is a natural question whether a Reeb orbit of particular types exists. D. Cristofaro-Gardiner, M. Hutchings and D. Pomerleano showed that every nondegenerate closed contact three manifold with…

Symplectic Geometry · Mathematics 2023-10-05 Taisuke Shibata

A classical theorem due to Wadsley implies that, on a connected contact manifold all of whose Reeb orbits are closed, there is a common period for the Reeb orbits. In this paper we show that, for any Reeb flow on a closed connected…

Symplectic Geometry · Mathematics 2020-12-22 Daniel Cristofaro-Gardiner , Marco Mazzucchelli

We prove the non--triviality of the Reeb flow for the (2n+1)--dimensional standard contact spheres inside the fundamental group of their contactomorphism group, n greater than 3. The argument uses the existence of homotopically non--trivial…

Symplectic Geometry · Mathematics 2013-04-30 Roger Casals , Francisco Presas

We develop methods for studying the smooth closing lemma for Reeb flows in any dimension using contact homology. As an application, we prove a conjecture of Irie, stating that the strong closing lemma holds for Reeb flows on ellipsoids. Our…

Symplectic Geometry · Mathematics 2022-11-08 Julian Chaidez , Ipsita Datta , Rohil Prasad , Shira Tanny

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

This paper is devoted to studying a notion of Bott integrability for Reeb flows on contact 3-manifolds. We show, in analogy with work of Fomenko-Zieschang on Hamiltonian flows in dimension 4, that Bott-integrable Reeb flows exist precisely…

Symplectic Geometry · Mathematics 2024-01-17 Hansjörg Geiges , Jakob Hedicke , Murat Sağlam

We survey various recent results on the existence and properties of periodic orbits of Reeb vector fields in three dimensions. We give an introduction to the "elementary spectral invariants" of contact three-manifolds, and we explain how…

Symplectic Geometry · Mathematics 2026-05-14 Michael Hutchings

We investigate the effect of a hyperbolic (or, more generally, isolated as an invariant set) closed Reeb orbit on the dynamics of a Reeb flow on the $(2n-1)$-dimensional standard contact sphere, extending two results previously known for…

Symplectic Geometry · Mathematics 2025-11-27 Erman Cineli , Viktor L. Ginzburg , Basak Z. Gurel , Marco Mazzucchelli

The main theme of this paper is the dynamics of Reeb flows with symmetries on the standard contact sphere. We introduce the notion of strong dynamical convexity for contact forms invariant under a group action, supporting the standard…

Symplectic Geometry · Mathematics 2020-11-09 Viktor L. Ginzburg , Leonardo Macarini

We exhibit sufficient conditions for a finite collection of periodic orbits of a Reeb flow on a closed $3$-manifold to bound a positive global surface of section with genus zero. These conditions turn out to be $C^\infty$-generically…

Dynamical Systems · Mathematics 2021-09-14 Umberto L. Hryniewicz , Pedro A. S. Salomão , Krzysztof Wysocki

The aim of the paper is three-fold. We begin by proving a formula, both global and local versions, relating the number of periodic orbits of an iterated map and the Lefschetz numbers, or indices in the local case, of its iterations. This…

Symplectic Geometry · Mathematics 2013-11-05 Viktor L. Ginzburg , Yusuf Gören

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

We investigate the equivariant cohomology of the natural torus action on a K-contact manifold and its relation to the topology of the Reeb flow. Using the contact moment map, we show that the equivariant cohomology of this action is…

Symplectic Geometry · Mathematics 2018-03-16 Oliver Goertsches , Hiraku Nozawa , Dirk Toeben