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We prove that the Shilov boundary is invariant under proper holomorphic mappings between some classes of domains (containing among others quasi-balanced domains with the continuous Minkowski functionals). Moreover, we obtain an extension…

Complex Variables · Mathematics 2012-06-07 Lukasz Kosinski

This paper contains a thorough investigation of invariant distributions supported on limit sets of discrete groups acting convex cocompactly on symmetric spaces of negative curvature. It can be considered as a continuation of…

Differential Geometry · Mathematics 2007-05-23 Martin Olbrich

We prove that all flexible Weinstein fillings of a given contact manifold with vanishing first Chern class have isomorphic integral cohomology; in certain cases, we prove that all flexible fillings are symplectomorphic. As an application,…

Symplectic Geometry · Mathematics 2017-09-08 Oleg Lazarev

Suppose that $(M,E)$ is a compact contact manifold, and that a compact Lie group $G$ acts on $M$ transverse to the contact distribution $E$. In an earlier paper, we defined a $G$-transversally elliptic Dirac operator $\dirac$, constructed…

Symplectic Geometry · Mathematics 2012-01-17 Sean Fitzpatrick

We introduce a procedure for gluing Weinstein domains along Weinstein subdomains. By gluing along flexible subdomains, we show that any finite collection of high-dimensional Weinstein domains with the same topology are Weinstein subdomains…

Symplectic Geometry · Mathematics 2020-05-13 Oleg Lazarev

We compute the homotopy type of the space of embeddings of convex disks with Legendrian boundary into a tight contact $3$-manifold, whenever the sum of the absolute value of the rotation number of the boundary with the Thurston-Bennequin…

Symplectic Geometry · Mathematics 2022-12-29 Eduardo Fernández , Javier Martínez-Aguinaga , Francisco Presas

A non-degenerate contact form is lacunary if the indexes of every contractible periodic Reeb orbit have the same parity. To the best of our knowledge, every contact form with finitely many periodic orbits known so far is non-degenerate and…

Symplectic Geometry · Mathematics 2026-02-26 Miguel Abreu , Leonardo Macarini

We consider convex contact spheres $Y$ all of whose Reeb orbits are closed. Any such $Y$ admits a stratification by the periods of closed Reeb orbits. We show that $Y$ "resembles" a contact ellipsoid: any stratum of $Y$ is an integral…

Symplectic Geometry · Mathematics 2023-02-24 Marco Mazzucchelli , Marco Radeschi

We consider plumbings of symplectic disk bundles over spheres admitting concave contact boundary, with the goal of understanding the geometric properties of the boundary contact structure in terms of the data of the plumbing. We focus on…

Symplectic Geometry · Mathematics 2025-01-16 Aleksandra Marinković , Jo Nelson , Ana Rechtman , Laura Starkston , Shira Tanny , Luya Wang

This work is dedicated to the study of the Moebius invariant class of constrained Willmore surfaces and its symmetries. We define a spectral deformation by the action of a loop of flat metric connections; Baecklund transformations, by…

Differential Geometry · Mathematics 2013-07-24 Áurea Casinhas Quintino

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 construct the Ruelle invariant of a volume preserving flow and a symplectic cocycle in any dimension and prove several properties. In the special case of the linearized Reeb flow on the boundary of a convex domain $X$ in…

Symplectic Geometry · Mathematics 2022-05-03 Julian Chaidez , Oliver Edtmair

Let N be a complete, simply-connected surface of constant curvature \kappa \leq 0. Moreover, suppose that \Omega and \tilde{\Omega} are strictly convex domains in N with the same area. We show that there exists an area-preserving…

Differential Geometry · Mathematics 2008-05-29 S. Brendle

We show that any compact orientable hyperbolic 3-cone-manifold with cone angle at most \pi can be continuously deformed to a complete hyperbolic manifold homeomorphic to the complement of the singularity. This together with the local…

Geometric Topology · Mathematics 2007-05-23 Sadayoshi Kojima

Comparison and localization results for the Lempert function, the Carath\'eodory distance and their infinitesimal forms on strongly pseudoconvex domains are obtained. Related results for visible and strongly complete domains are proved.

Complex Variables · Mathematics 2023-11-28 Nikolai Nikolov

Let $(M, \alpha)$ be a $2n+1$-dimensional connected compact contact toric manifold of Reeb type. Suppose the contact form $\alpha$ is regular, we find conditions under which $M$ is homeomorphic to $S^{2n+1}$.

Symplectic Geometry · Mathematics 2022-05-20 Hui Li

In this article we consider area preserving diffeomorphisms of planar domains, and we are interested in their conformal points, i.e., points at which the derivative is a similarity. We present some conditions that guarantee existence of…

Symplectic Geometry · Mathematics 2022-12-29 Peter Albers , Serge Tabachnikov

In this paper we give explicit, handle-by-handle constructions of concave symplectic fillings of all closed, oriented contact 3-manifolds. These constructions combine recent results of Giroux relating contact structures and open book…

Geometric Topology · Mathematics 2009-11-07 David T. Gay

Under a plausible geometric hypothesis, we show that a biholomorphic mapping of smoothly bounded, pseudoconvex domains extends to a diffeomorphism of the closures.

Complex Variables · Mathematics 2014-02-11 Steven G. Krantz

Toric orbifolds are a generalization of simplicial projective toric varieties. In this paper, we show that there is a resolution of singularities of a toric orbifold. In a different category, the class of quasi-contact toric manifolds…

Algebraic Topology · Mathematics 2022-08-23 Koushik Brahma , Soumen Sarkar , Subhankar Sau