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We prove that a proper holomorphic map between two bounded symmetric domains of the same dimension, one of them being irreducible, is a biholomorphism. Our methods allow us to give a single, all-encompassing argument that unifies the…

Complex Variables · Mathematics 2015-01-12 Gautam Bharali , Jaikrishnan Janardhanan

Motivated by the way two special domains, namely the symmetrized bidisc and the tetrablock, could be defined as the images of $2$-proper holomorphic images of classical Cartan domains, we present a general approach to study $2$-proper…

Complex Variables · Mathematics 2025-07-17 Gargi Ghosh , Włodzimierz Zwonek

In the paper the complex geodesics of a convex domain in $\mathbb C^n$ are studied. One of the main results of the paper provides certain necessary condition for a holomorphic map to be a complex geodesic for a convex domain in $\mathbb…

Complex Variables · Mathematics 2017-09-18 Sylwester Zając , Paweł Zapałowski

In this note, we construct examples of bounded smooth convex domains with no non-trivial analytic discs on the boundary which possess a holomorphic self-map without fixed points so that the iterates do not converge to a point (that is, the…

Complex Variables · Mathematics 2026-02-17 Filippo Bracci , Ahmed Yekta Ökten

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

We describe the basic complex geometry and function theory of the {\em pentablock} $\mathcal{P}$, which is the bounded domain in $\mathbb{C}^3$ given by \[ \mathcal{P}= \{(a_{21}, \mathrm{tr} A, \det A): A= \begin{bmatrix}…

Complex Variables · Mathematics 2014-09-04 J. Agler , Z. A. Lykova , N. J. Young

We characterize pairs of bounded Reinhardt domains in $\CC^2$ between which there exists a proper holomorphic map and find all proper maps that are not elementary algebraic.

Complex Variables · Mathematics 2007-05-23 A. V. Isaev , N. G. Kruzhilin

We reduce the problem of constructing a linear solution operator to the $\bar{\partial}$-equation on smoothly bounded weakly pseudoconvex domains, $\Omega$, in $\mathbb{C}^2$ to the problem of the boundary $\bar{\partial}_b$-equation. We…

Complex Variables · Mathematics 2018-11-14 Dariush Ehsani

We establish a localized Bochner-type rigidity theorem for harmonic maps between Riemannian manifolds. Let $f : (M,g) \to (\overline{M},\overline{g})$ be a harmonic map from a compact manifold. Instead of assuming a global nonpositivity…

Differential Geometry · Mathematics 2026-03-03 Sergey Stepanov

We show that a domain that satisfies the visibility property with $\mathcal C^2$-smooth boundary is pseudoconvex.

Complex Variables · Mathematics 2024-10-14 Nikolai Nikolov , Ahmed Yekta Ökten , Pascal J. Thomas

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

The Fefferman--Szeg\H{o} metric \(g_{\operatorname{FS}}^\Omega\) on a \(C^\infty\)-smooth bounded strongly pseudoconvex domain \(\Omega\subset\mathbb C^n\) is an invariant metric defined via the Fefferman surface measure. For this metric,…

Complex Variables · Mathematics 2026-05-26 Anjali Bhatnagar , Jiliang Fan

We prove a sharp lower bound for the Tanaka-Webster holomorphic sectional curvature of strictly pseudoconvex real hypersurfaces that are "semi-isometrically" immersed in a K\"ahler manifold of nonnegative holomorphic sectional curvature…

Complex Variables · Mathematics 2022-10-28 Duong Ngoc Son

Existence and uniqueness of complex geodesics joining two points of a convex bounded domain in a Banach space $X$ are considered. Existence is proved for the unit ball of $X$ under the assumption that $X$ is 1-complemented in its double…

Functional Analysis · Mathematics 2009-07-08 Sean Dineen , Richard M. Timoney

We prove the following: For $\epsilon>0$, let $D_\epsilon$ be the bounded strictly pseudoconvex domain in $\mathbb C^2$ given by \begin{equation*} (\log|z|)^2+(\log|w|)^2<\epsilon^2. \end{equation*} The boundary $M_\epsilon:=\partial…

Complex Variables · Mathematics 2018-08-14 Peter Ebenfelt , Duong Ngoc Son , Dmitri Zaitsev

In [2], the authors develop a global correspondence between immersed weakly horospherically convex hypersurfaces $\phi:M^n \to \mathbb{H}^{n+1}$ and a class of conformal metrics on domains of the round sphere $\mathbb{S}^n$. Some of the key…

Differential Geometry · Mathematics 2021-03-12 Vincent Bonini , Jie Qing , Jingyong Zhu

The following result is proved: Let $D$ and $D'$ be bounded domains in $\mathbb C^n$, $\partial D$ is smooth, real-analytic, simply connected, and $\partial D'$ is connected, smooth, real-algebraic. Then there exists a proper holomorphic…

Complex Variables · Mathematics 2009-11-07 Rasul Shafikov

In this paper (Math. Res. Lett. 13 (2006). No 4, 509-523), the authors established a pseudo-normal form for proper holomoprhic mappings between balls in complex spaces with degenerate rank. This then was used to give a complete…

Complex Variables · Mathematics 2007-05-23 Xiaojun Huang , Shanyu Ji , Dekang Xu

In this article, we study convex affine domains which can cover a compact affine manifold. For this purpose, we first show that every strictly convex quasi-homogeneous projective domain has at least $C^1$ boundary and it is an ellipsoid if…

Geometric Topology · Mathematics 2007-05-23 Kyeonghee Jo

In this paper we give different compactifications for the domain and the codomain of an affine rational map $f$ which parametrizes a hypersurface. We show that the closure of the image of this map (with possibly some other extra…

Algebraic Geometry · Mathematics 2010-06-15 Nicolas Botbol