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Related papers: Hyperbolicity of general deformations

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These notes grew out of a mini-course given from May 13th to May 17th at UQAM in Montreal during a workshop on Diophantine Approximation and Value Distribution Theory. We start with an overview of Lang-Vojta's conjectures on…

Algebraic Geometry · Mathematics 2020-02-28 Ariyan Javanpeykar

This paper presents several new properties of the intrinsic $\kappa$-projection into $\kappa$-hyperbolically convex sets of $\kappa$-hyperbolic space forms, along with closed-form formulas for the intrinsic $\kappa$-projection into specific…

Optimization and Control · Mathematics 2025-04-17 Ronny Bergmann , Orizon P. Ferreira , Sandor Németh , Jinzhen Zhu

We discuss an alternative approach to the uniformisation problem on surfaces with boundary by representing conformal structures on surfaces $M$ of general type by hyperbolic metrics with boundary curves of constant positive geodesic…

Differential Geometry · Mathematics 2018-07-13 Melanie Rupflin

Surfaces of general type with positive second Segre number $s_2:=c_1^2-c_2>0$ are known by results of Bogomolov to be quasi-hyperbolic i.e. with finitely many rational and elliptic curves. These results were extended by McQuillan in his…

Algebraic Geometry · Mathematics 2014-02-26 Xavier Roulleau , Erwan Rousseau

This preliminary report studies immersed surfaces of constant mean curvature in $H^3$ through their {\it adjusted Gauss maps} (as harmonic maps in $S^2$) and their {\it adjusted frames} in SU(2). Lawson's correspondence between Euclidean…

Differential Geometry · Mathematics 2007-05-23 Magdalena Toda

For a hyperbolic fibered 3-manifold M, we prove results that uniformly relate the structure of surface projections as one varies the fibrations of M. This extends our previous work from the fully-punctured to the general case.

Geometric Topology · Mathematics 2022-02-15 Yair N. Minsky , Samuel J. Taylor

We study the algebraic hyperbolicity of very general hypersurfaces in $\mathbb{P}^m \times \mathbb{P}^n$ by using three techniques that build on past work by Ein, Voisin, Pacienza, Coskun and Riedl, and others. As a result, we completely…

Algebraic Geometry · Mathematics 2022-03-04 Wern Yeong

This paper establishes new degree bounds for Kobayashi hyperbolicity in dimension two. Our main results are: -- A very generic surface in $\mathbb{P}^3$ of degree at least $17$ is Kobayashi hyperbolic. -- The complement of a {\em generic}…

Complex Variables · Mathematics 2026-05-12 Lei Hou , Dinh Tuan Huynh , Joël Merker , Song-Yan Xie

Hyperbolic geometry is developed in a purely algebraic fashion from first principles, without a prior development of differential geometry. The natural connection with the geometry of Lorentz, Einstein and Minkowski comes from a projective…

Metric Geometry · Mathematics 2009-09-09 N. J. Wildberger

A dimension reduction for the hyperbolic space is established. When points are far apart an embedding with bounded distortion into the hyperbolic plane is achieved.

Metric Geometry · Mathematics 2007-10-09 itai benjamini , Yury Makarychev

We prove a hyperplane inequality for the surface area of projection bodies.

Metric Geometry · Mathematics 2012-04-27 Alexander Koldobsky

In this paper we consider three dimensional upper half space $\mathbb{H}^3 $ equipped with various Kropina metrics obtained by deformation of hyperbolic metric of $\mathbb{H}^3$ through $1$-forms and obtain a partial differential equation…

Differential Geometry · Mathematics 2022-03-02 Ashok Kumar , Ranadip Gangopadhyay , Bankteshwar Tiwari , Hemangi Madhusudan Shah

The moduli space of generalized deformations of a Calabi-Yau hypersurface is computed in terms of the Jacobian ring of the defining polynomial. The fibers of the tangent bundle to this moduli space carry algebra structures, which are…

Algebraic Geometry · Mathematics 2007-05-23 John Terilla

The object of study of this article is compact surfaces in the three-dimensional hyperbolic space with a positive-definite second fundamental form. It is shown that several conditions on the Gaussian curvature of the second fundamental form…

Differential Geometry · Mathematics 2009-09-18 Steven Verpoort

This paper is devoted to superlensing using hyperbolic metamaterials: the possibility to image an arbitrary object using hyperbolic metamaterials without imposing any conditions on size of the object and the wave length. To this end, two…

Analysis of PDEs · Mathematics 2016-06-20 Eric Bonnetier , Hoai-Minh Nguyen

There are three complete plane geometries of constant curvature: spherical, Euclidean and hyperbolic geometry. We explain how a closed oriented surface can carry a geometry which locally looks like one of these. Focussing on the hyperbolic…

Algebraic Geometry · Mathematics 2024-06-14 Peter B. Gothen

Adapting focal loci techniques used by Chiantini and Lopez, we provide lower bounds on the genera of curves contained in very general surfaces in Gorenstein toric threefolds. We illustrate the utility of these bounds by obtaining results on…

Algebraic Geometry · Mathematics 2019-12-10 Christian Haase , Nathan Ilten

The paper addresses the numerical approximation of two variants of hyperbolic mean curvature flow of surfaces in $\mathbb R^3$. For each evolution law we propose both a finite element method, as well as a finite difference scheme in the…

Numerical Analysis · Mathematics 2025-02-11 Klaus Deckelnick , Robert Nürnberg

We show that the standard method for constructing closed hyperbolic manifolds of arbitrary dimension possessing reflective symmetries typically produces reflections whose fixed point sets are nonseparating.

Geometric Topology · Mathematics 2025-07-01 Sami Douba , Franco Vargas Pallete

In this work we introduce a new method for the construction of minimal submanifolds of codimension two in even dimensional spheres and hyperbolic spaces. This is based on the theory of complex-valued harmonic morphisms. This gives the first…

Differential Geometry · Mathematics 2026-03-26 Sigmundur Gudmundsson , Leonard Nygren Löhndorf