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Related papers: Maximal contact and symplectic structures

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We give a complete characterization of those disk bundles over surfaces which embed as rationally convex strictly pseudoconvex domains in $\mathbb{C}^2$. We recall some classical obstructions and prove some deeper ones related to symplectic…

Complex Variables · Mathematics 2016-02-05 Stefan Nemirovski , Kyler Siegel

We demonstrate that the functorial properties of the symplectic field theory under strong cobordisms and surgery cobordisms can produce finite algebraic (planar) torsions from simple examples, which gives a unified treatment of most of the…

Symplectic Geometry · Mathematics 2026-03-09 Zhengyi Zhou

Let $M^n$ be either a simply connected space form or a rank-one symmetric space of noncompact type. We consider Weingarten hypersurfaces of $M\times\mathbb R$, which are those whose principal curvatures $k_1,\dots ,k_n$ and angle function…

Differential Geometry · Mathematics 2022-12-09 Ronaldo F. de Lima , Álvaro K. Ramos , João P. dos Santos

We introduce the Kodaira dimension of contact 3-manifolds and establish some basic properties. In particular, contact 3-manifolds with distinct Kodaria dimensions behave differently when it comes to the geography of various kinds of…

Symplectic Geometry · Mathematics 2016-10-24 Tian-Jun Li , Cheuk Yu Mak

We construct an infinite-dimensional symplectic 2-groupoid as the integration of an exact Courant algebroid. We show that every integrable Dirac structure integrates to a "Lagrangian" sub-2-groupoid of this symplectic 2-groupoid. As a…

Differential Geometry · Mathematics 2020-03-30 Rajan Amit Mehta , Xiang Tang

We study symplectic rigidity phenomena for fibers in cotangent bundles of Riemann surfaces. Our main result can be seen as a generalization to open Riemann surfaces of arbitrary genus of work of Eliashberg and Polterovich on the Nearby…

Symplectic Geometry · Mathematics 2022-07-15 Laurent Côté , Georgios Dimitroglou Rizell

We show that simply connected contact manifolds that are subcritically Stein fillable have a unique symplectically aspherical filling up to diffeomorphism. Various extensions to manifolds with non-trivial fundamental group are discussed.…

Symplectic Geometry · Mathematics 2019-11-11 Kilian Barth , Hansjörg Geiges , Kai Zehmisch

Using $S^1$-equivariant symplectic homology, in particular its mean Euler characteristic, of the natural filling of links of Brieskorn-Pham polynomials, we prove the existence of infinitely many inequivalent contact structures on various…

Differential Geometry · Mathematics 2016-12-21 Charles P. Boyer , Leonardo Macarini , Otto van Koert

We introduce a new invariant, the \textit{positive idempotent group}, for strongly asymptotically dynamically convex contact manifolds. This invariant can be used to distinguish different contact structures. As an application, for any…

Symplectic Geometry · Mathematics 2020-11-24 Mu Zhao

The aim of this paper is two-fold. First, we define symplectic maps between Hitchin systems related to holomorphic bundles of different degrees. We call these maps the Symplectic Hecke Correspondence (SHC) of the corresponding Higgs…

Exactly Solvable and Integrable Systems · Physics 2015-06-26 A. M. Levin , M. A. Olshanetsky , A. Zotov

We present a new existence mechanism, based on symplectic topology, for orbits of Hamiltonian flows connecting a pair of disjoint subsets in the phase space. The method involves function theory on symplectic manifolds combined with rigidity…

Symplectic Geometry · Mathematics 2021-01-12 Michael Entov , Leonid Polterovich

We establish an existence $h$-principle for symplectic cobordisms of dimension $2n>4$ with concave overtwisted contact boundary.

Symplectic Geometry · Mathematics 2020-08-04 Yakov Eliashberg , Emmy Murphy

Given two closed contact three-manifolds, one can form their contact connected sum via the Weinstein one-handle attachment. We study how pseudo-holomorphic curves in the symplectization behave under this operation. As a result, we give a…

Symplectic Geometry · Mathematics 2025-01-30 Luya Wang

We review the results of several of our papers about the procedure of extension of Hamiltonians, allowing the construction of families of superintegrable systems with non-trivial polynomial first integrals (or symmetry operators) of…

Mathematical Physics · Physics 2024-12-02 Claudia Maria Chanu , Giovanni Rastelli

In this article, we introduce special domains and discuss the geometry of these domains, which includes showing that every pseudoconvex truncated tube domain is a special domain. Next, we prove a theorem for the envelope of special domains…

Complex Variables · Mathematics 2025-11-10 Suprokash Hazra

Generalizing the canonical symplectization of contact manifolds, we construct an infinite dimensional non-linear Stiefel manifold of weighted embeddings into a contact manifold. This space carries a symplectic structure such that the…

Symplectic Geometry · Mathematics 2022-06-20 Stefan Haller , Cornelia Vizman

We derive the asymptotic expansion at infinity for embedded ends of uniformly elliptic Weingarten surfaces with finite total curvature in $\mathbb{R}^3$, and we establish a maximum principle at infinity. Furthermore, we solve the Dirichlet…

Differential Geometry · Mathematics 2026-02-17 Aires E. M. Barbieri , José A. Gálvez , Yuanyuan Lian , Kai Zhang

We propose a novel approach to contact Hamiltonian mechanics which, in contrast to the one dominating in the literature, serves also for non-trivial contact structures. In this approach Hamiltonians are no longer functions on the contact…

Symplectic Geometry · Mathematics 2022-11-03 Katarzyna Grabowska , Janusz Grabowski

After reviewing recent results on symplectic Lefschetz pencils and symplectic branched covers of CP^2, we describe a new construction of maps from symplectic manifolds of any dimension to CP^2 and the associated monodromy invariants. We…

Geometric Topology · Mathematics 2007-05-23 Denis Auroux

We show that the space of open subsets of any complete and exact symplectic $4$-manifold has infinite dimension with respect to the symplectic Banach-Mazur distance; the quasi-flats we construct take values in the set of dynamically convex…

Symplectic Geometry · Mathematics 2023-11-30 Dan Cristofaro-Gardiner , Richard Hind