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We highlight a condition, the approaching geodesics property, on a proper geodesic Gromov hyperbolic metric space, which implies that the horofunction compactification is topologically equivalent to the Gromov compactification. It is known…

Complex Variables · Mathematics 2023-06-16 Leandro Arosio , Matteo Fiacchi , Sebastien Gontard , Lorenzo Guerini

In this paper we study when the Kobayashi distance on a Kobayashi hyperbolic domain has certain visibility properties, with a focus on unbounded domains. "Visibility" in this context is reminiscent of visibility, seen in negatively curved…

Complex Variables · Mathematics 2023-03-07 Gautam Bharali , Andrew Zimmer

In this paper we establish Gehring-Hayman type theorems for some complex domains. Suppose that $\Omega\subset \mathbb{C}^n$ is a bounded $m$-convex domain with Dini-smooth boundary, or a bounded strongly pseudoconvex domain with…

Complex Variables · Mathematics 2020-05-07 Jinsong Liu , Hongyu Wang , Qingshan Zhou

For a Kobayashi hyperbolic domain, Abate introduced the notion of small and big horospheres of a given radius at a boundary point with a pole. In this article, we investigate which domains have the property that closed big horospheres and…

Complex Variables · Mathematics 2025-12-12 Vikramjeet Singh Chandel , Nishith Mandal

We study the metric compactification of a Kobayashi hyperbolic complex manifold \(\mathcal{X} \) equipped with the Kobayashi distance \( \mathsf{k}_{\mathcal{X}} \). We show that this compactification is genuine -- i.e., \( \mathcal{X} \)…

Complex Variables · Mathematics 2025-08-04 Vikramjeet Singh Chandel , Nishith Mandal

We survey some recent results and open questions on the approaching geodesics property and its application to the study of the Gromov and horofunction compactifications of a proper geodesic Gromov metric space. We obtain results on the…

Complex Variables · Mathematics 2025-01-13 Leandro Arosio , Matteo Fiacchi

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

We first give a sufficient condition, issued from pluripotential theory, for an unbounded domain in the complex Euclidean space $\mathbb C^n$ to be Kobayashi hyperbolic. Then, we construct an example of a rigid pseudoconvex domain in…

Complex Variables · Mathematics 2020-05-08 Hervé Gaussier , Nikolay Shcherbina

In this paper, we give sufficient conditions for Cauchy-completeness of Kobayashi hyperbolic domains in complex manifolds. The first result gives a sufficient condition for completeness for relatively compact domains in several large…

Complex Variables · Mathematics 2025-04-11 Rumpa Masanta

In this paper we study the global geometry of the Kobayashi metric on "convex" sets. We provide new examples of non-Gromov hyperbolic domains in $\mathbb{C}^n$ of many kinds: pseudoconvex and non-pseudocon \newline -vex, bounded and…

Complex Variables · Mathematics 2018-09-17 Nikolai Nikolov , Maria Trybula

We introduce the notion of locally visible and locally Gromov hyperbolic domains in $\mathbb C^d$. We prove that a bounded domain in $\mathbb C^d$ is locally visible and locally Gromov hyperbolic if and only if it is (globally) visible and…

Complex Variables · Mathematics 2023-11-28 Filippo Bracci , Hervé Gaussier , Nikolai Nikolov , Pascal J. Thomas

We prove that every bounded smooth domain of finite d'Angelo type in $\mathbb{C}^2$ endowed with the Kobayashi distance is Gromov hyperbolic and its Gromov boundary is canonically homeomorphic to the Euclidean boundary. We also show that…

Complex Variables · Mathematics 2023-06-16 Matteo Fiacchi

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

We introduce a prime end-type theory on complete Kobayashi hyperbolic manifolds using horosphere sequences. This allows to introduce a new notion of boundary-new even in the unit disc in the complex space-the horosphere boundary, and a…

Complex Variables · Mathematics 2018-04-06 Filippo Bracci , Hervé Gaussier

The lack of a uniformization theorem in several complex variables leads to a desire to classify all of the simply connected domains. We use established computational methods and a localization technique to generalize a recently-published…

Complex Variables · Mathematics 2026-01-07 Nicholas Newsome

We prove that for a bounded domain $\Omega\subset \mathbb R^n$ which is Gromov hyperbolic with respect to the quasihyperbolic metric, especially when $\Omega$ is a finitely connected planar domain, the Sobolev space $W^{1,\,\infty}(\Omega)$…

Functional Analysis · Mathematics 2016-05-27 Pekka Koskela , Tapio Rajala , Yi Ru-Ya Zhang

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 show that in a bounded Gromov hyperbolic domain $\Omega$ smooth functions with bounded derivatives $C^\infty(\Omega)\cap W^{k,\infty}(\Omega)$ are dense in the homogeneous Sobolev spaces $L^{k,p}(\Omega)$.

Functional Analysis · Mathematics 2018-03-26 Debanjan Nandi

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

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
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