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Related papers: Kobayashi hyperbolicity in degree > n^{2n}

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Universal upper bounds for the Kobayashi and quasi-hyperbolic distances near Dini-smooth boundary points of domains in $\C^n$ and $\R^n,$ respectively, are obtained.

Complex Variables · Mathematics 2017-12-20 Nikolai Nikolov , Lyubomir Andreev

We provide a geometric condition ensuring that a very general element of a complete linear system on an abelian variety is Kobayashi hyperbolic. Some related conjectures are also given.

Algebraic Geometry · Mathematics 2025-12-19 Federico Caucci

In 1999 Brady constructed the first example of a non-hyperbolic finitely presented subgroup of a hyperbolic group by fibring a non-positively curved cube complex over the circle. We show that his example has Dehn function bounded above by…

Group Theory · Mathematics 2025-01-06 Robert Kropholler , Claudio Llosa Isenrich , Ignat Soroko

We study hyperbolicity for quasi-projective varieties where the boundary divisor consists of n+1 numerically parallel effective divisors on a complex projective variety of dimension n, allowing non-empty intersection. Under explicit local…

Complex Variables · Mathematics 2026-03-16 Julie Tzu-Yueh Wang , Zheng Xiao

We classify all homogeneous Kobayashi-hyperbolic manifolds of dimension $n \ge 2$ whose group of holomorphic automorphisms has dimension either $n^2 - 7$ or $n^2 - 8.$ This paper continues the work of A. Isaev, who classified all such…

Complex Variables · Mathematics 2022-03-01 Elliot Herrington

In this paper we study the global geometry of the Kobayashi metric on domains in complex Euclidean space. We are particularly interested in developing necessary and sufficient conditions for the Kobayashi metric to be Gromov hyperbolic. For…

Complex Variables · Mathematics 2016-02-04 Andrew M. Zimmer

We introduce a number of new tools for the study of relatively hyperbolic groups. First, given a relatively hyperbolic group G, we construct a nice combinatorial Gromov hyperbolic model space acted on properly by G, which reflects the…

Group Theory · Mathematics 2009-03-29 Daniel Groves , Jason Fox Manning

A numerical scheme is developed for solution of the Goursat problem for a class of nonlinear hyperbolic systems with an arbitrary number of independent variables. Convergence results are proved for this difference scheme. These results are…

Numerical Analysis · Mathematics 2025-10-20 A. I. Bobenko , D. Matthes , Yu. B. Suris

In this paper, we obtain a more precise estimate of Catlin-type distance for smoothly bounded pseudoconvex domain of finite type in $\mathbb{C}^2$. As an application, we get an alternative proof of the Gromov hyperbolicity of this domain…

Complex Variables · Mathematics 2023-09-26 Haichou Li , Xingsi Pu , Lang Wang

In this paper we give an local estimate for the Kobayashi distance on a bounded convex domain of finite type, which relates to a local pseudodistance near the boundary. The estimate is precise up to a bounded additive term. Also we conclude…

Complex Variables · Mathematics 2022-11-22 Hongyu Wang

In this note, we prove the generic Kobayashi volume measure hyperbolicity of singular directed varieties $(X, V)$, as soon as the canonical sheaf $\mathcal{K}\_V$ of $V$ is big in the sense of Demailly.

Algebraic Geometry · Mathematics 2016-03-08 Ya Deng

In this paper, by using the generalized Borel theorems in $\mathbb{CP}^2$, we show the hyperbolicity of Fermat type curves and their complement in $\mathbb{CP}^2$. This improves Noguchi-Shirosaki's and Demailly-El Goul's degree bounds.

Algebraic Geometry · Mathematics 2026-02-18 Anh Tuan Nguyen

We give a necessary complex geometric condition for a bounded smooth convex domain in Cn, endowed with the Kobayashi distance, to be Gromov hyperbolic. More precisely, we prove that if a smooth bounded convex domain contains an analytic…

Complex Variables · Mathematics 2013-12-03 Hervé Gaussier , Harish Seshadri

In this paper we develop a new theory of infinitesimal harmonic deformations for compact hyperbolic 3-manifolds with ``tubular boundary''. In particular, this applies to complements of tubes of radius at least $R_0 = \arctanh(1/\sqrt{3})…

Geometric Topology · Mathematics 2014-11-11 Craig D. Hodgson , Steven P. Kerckhoff

This paper is devoted to strictly hyperbolic systems and equations with non-smooth coefficients. Below a certain level of smoothness, distributional solutions may fail to exist. We construct generalised solutions in the Colombeau algebra of…

Analysis of PDEs · Mathematics 2011-08-12 Claudia Garetto , Michael Oberguggenberger

We discuss several topics related to the notion of strong hyperbolicity which are of interest in general relativity. After introducing the concept and showing its relevance we provide some covariant definitions of strong hyperbolicity. We…

General Relativity and Quantum Cosmology · Physics 2017-08-07 Oscar Reula

In this paper we extend Thurston's hyperbolic Dehn surgery theorem to a class of geometrically infinite hyperbolic 3-manifolds. As an application we prove a modest density theorem for Kleinian groups. We also discuss hyperbolic Dehn surgery…

Geometric Topology · Mathematics 2007-05-23 Kenneth Bromberg

Following Newton, Ivory and Arnold, we study the Newtonian potentials of algebraic hypersurfaces in $R^n$. The ramification of (analytic continuations of) these potential depends on a monodromy group, which can be considered as a proper…

Algebraic Geometry · Mathematics 2014-07-29 Victor A. Vassiliev

After a study of the Kobayashi metrics on certain scaled domains, we show the stabilities of the infinitesimal Kobayashi metrics and the integrated distances in different scaling processes. As an application, we prove that bounded…

Complex Variables · Mathematics 2022-06-10 Ben Zhang

We show that for every smooth generic projective hypersurface $X\subset\mathbb P^{n+1}$, there exists a proper subvariety $Y\subsetneq X$ such that $\operatorname{codim}_X Y\ge 2$ and for every non constant holomorphic entire map…

Complex Variables · Mathematics 2017-04-04 Simone Diverio , Stefano Trapani