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The theory of analytic function spaces in very general tubular domains over symmetric cones is a relatively new interesting research area. Tube domains are very general and very complicated domains. Recently several new results in this…

Complex Variables · Mathematics 2025-09-29 R. F. Shamoyan

We show that every bordered Riemann surface, $M$, with smooth boundary $bM$ admits a proper holomorphic map $M\to \Omega$ into any bounded strongly pseudoconvex domain $\Omega$ in $\mathbb C^n$, $n>1$, extending to a smooth map $f:\overline…

Complex Variables · Mathematics 2023-08-07 Franc Forstneric

We introduce the notion of extremal basis of tangent vector fields at a boundary point of finite type of a pseudo-convex domain in $\mathbb{C}^n$. Then we define the class of geometrically separated domains at a boundary point, and give a…

Complex Variables · Mathematics 2014-07-10 Philippe Charpentier , Yves Dupain

We study the boundary regularity of proper holomorphic mappings between strictly pseudoconvex domains with $C^2$-boundaries.

Complex Variables · Mathematics 2021-04-27 Alexandre Sukhov

We study the behavior of the fractional convexity when the fractional parameter goes to 1. For any notion of convexity, the convex envelope of a datum prescribed on the boundary of a domain is defined as the largest possible convex function…

Analysis of PDEs · Mathematics 2024-06-20 Begoña Barrios , Leandro M. Del Pezzo , Alexander Quaas , Julio D. Rossi

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

We prove a sharp lower bound for the fundamental gap on convex domains in Gaussian spaces, the difference between the first two eigenvalues of the Ornstein-Uhlenbeck operator with Dirichlet boundary conditions. Our main result establishes…

Spectral Theory · Mathematics 2025-10-28 Jin Sun , Kui Wang

We survey results arising from the study of domains in C^n with non-compact automorphism group. Beginning with a well-known characterization of the unit ball, we develop ideas toward a consideration of weakly pseudoconvex (and even…

Complex Variables · Mathematics 2016-09-06 A. V. Isaev , S. G. Krantz

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

The convex body isoperimetric conjecture in the plane asserts that the least perimeter to enclose given area inside a unit disk is greater than inside any other convex set of area $\pi$. In this note we confirm two cases of the conjecture:…

Differential Geometry · Mathematics 2021-04-13 Bo-Hshiung Wang , Ye-Kai Wang

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

In this paper, we prove a rigidity theorem for smooth strictly convex domains in Euclidean spaces.

Differential Geometry · Mathematics 2023-03-22 Jinmin Wang , Zhizhang Xie

We study the incoming boundary value problem for the stationary linearized Boltzmann equation in bounded convex domains. The geometry of the domain has a dramatic effect on the space of solutions. We prove the existence of solutions in…

Analysis of PDEs · Mathematics 2026-01-14 I-Kun Chen , Chun-Hsiung Hsia , Daisuke Kawagoe , Jhe-Kuan Su

We obtain some sharp estimates for the $p$-torsion of convex planar domains in terms of their area, perimeter, and inradius. The approach we adopt relies on the use of web functions (i.e. functions depending only on the distance from the…

Optimization and Control · Mathematics 2011-12-22 Ilaria Fragalà , Filippo Gazzola , Jimmy Lamboley

We prove that if a holomorphic self-map $f\colon \Omega\to \Omega$ of a bounded strongly convex domain $\Omega\subset \mathbb C^q$ with smooth boundary is hyperbolic then it admits a natural semi-conjugacy with a hyperbolic automorphism of…

Complex Variables · Mathematics 2021-12-22 Amedeo Altavilla , Leandro Arosio , Lorenzo Guerini

We prove that if the Carath\'eodory metric on a strictly pseudoconvex domain with a smooth boundary is locally K\"{a}hler near the boundary, then the domain is biholomorphic to a ball. We also establish a local rigidity theorem for domains…

Complex Variables · Mathematics 2026-04-24 Robert Xin Dong , Ruoyi Wang , Bun Wong

It is shown that any non-degenerate $\mathbb C$-convex domain in $\mathbb C^n$ is uniformly squeezing. It is also found the precise behavior of the squeezing function near a Dini-smooth boundary point of a plane domain.

Complex Variables · Mathematics 2018-08-14 Nikolai Nikolov , Lyubomir Andreev

A relatively polynomially convex subset $V$ of a domain $\Omega$ has the extension property if for every polynomial $p$ there is a bounded holomorphic function $\phi$ on $\Omega$ that agrees with $p$ on $V$ and whose $H^\infty$ norm on…

Complex Variables · Mathematics 2017-04-13 Lukasz Kosinski , John McCarthy

In this paper we prove: if a bounded domain with $C^2$ boundary covers a manifold which has finite volume with respect to either the Bergman volume, the K\"ahler-Einstein volume, or the Kobayashi-Eisenman volume, then the domain is…

Complex Variables · Mathematics 2018-02-06 Andrew Zimmer

A flag domain of a real from $G_0$ of a complex semismiple Lie group $G$ is an open $G_0$-orbit $D$ in a (compact) $G$-flag manifold. In the usual way one reduces to the case where $G_0$ is simple. It is known that if $D$ possesses…

Complex Variables · Mathematics 2018-07-20 T. Hayama , A. Huckleberry , Q. Latif
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