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Let U be the closed unit disc in C. We show that there is no continuous map F:U-->U^2, holomorphic on Int(U) and such that F(bU) = b(U^2).

Complex Variables · Mathematics 2020-03-10 Josip Globevnik

In this paper we investigate the global behavior of proper holomorphic maps f from the unit disc U={|z|<1} to C^2. The fact that U is transcendental imposes certain restrictions on the image f(U). For instance, f(U) cannot be contained in…

Complex Variables · Mathematics 2007-05-23 Franc Forstneric , Josip Globevnik

We prove that for any complex manifold X, the set of all holomorphic maps from the unit disc to X whose images are everywhere dense in X forms a dense subset in the space of all holomorphic maps from the disc to X. We show by an example…

Complex Variables · Mathematics 2007-05-23 Franc Forstneric , Joerg Winkelmann

We prove a boundary version of the open mapping theorem for holomorphic maps between strongly pseudoconvex domains. That is, we prove that the local image of a holomorphic map $f:D\to D'$ close to a boundary regular contact point $p\in \de…

Complex Variables · Mathematics 2012-11-27 Filippo Bracci , John Erik Fornaess

Let U be the open unit disc in C and let B be the open unit ball in C^2. We prove that every discrete subset of B is contained in the range f(U) of a complete, proper holomorphic embedding f:U-->B. Here the completeness of f means that for…

Complex Variables · Mathematics 2016-04-05 Josip Globevnik

There exists a proper holomorphic mapping between balls of different dimensions such that it does not extend continuously to the boundary. The aim of this paper is to show the same phenomenon occurs for pseudoconvex domains of different…

Complex Variables · Mathematics 2024-06-07 Atsushi Hayashimoto

For any closed analytic set X in C^2 there exists a proper holomorphic embedding of the unit disk into C^2 such that the image avoids X.

Complex Variables · Mathematics 2007-07-25 Stefan Borell , Frank Kutzschebauch , Erlend Fornaess Wold

We show that there are no tight nonholomorphic maps from irreducible domains into exceptional codomains, the only exception being the already known tight nonholomorphic maps from the Poincare disc. This follows up on previous work by the…

Differential Geometry · Mathematics 2014-10-30 Oskar Hamlet , Takayuki Okuda

We show that if $E$ is a closed convex set in $\mathbb C^n$ $(n>1)$ contained in a closed halfspace $H$ such that $E\cap bH$ is nonempty and bounded, then the concave domain $\Omega = \mathbb C^n\setminus E$ contains images of proper…

Complex Variables · Mathematics 2023-08-07 Barbara Drinovec Drnovsek , Franc Forstneric

We prove that proper pseudo-holomorphic maps between strictly pseudoconvex regions in almost complex manifolds extend to the boundary. The key point is that the Jacobian is far from zero near the boundary, and the proof is mainly based on…

Complex Variables · Mathematics 2012-10-19 Léa Blanc-Centi

We show that the graph of a holomorphic motion of the unit disc cannot be biholomorphic to a strongly pseudoconvex domain in C n .

Complex Variables · Mathematics 2016-12-20 Hervé Gaussier , Harish Seshadri

In this paper, we prove a rigidity result for proper holomorphic maps between unit balls that have many symmetries and which extend to H\"older continuous maps on the boundary, with H\"older exponent strictly greater than 1/2.

Complex Variables · Mathematics 2026-02-20 Kyle Huang , Jinwoo Park , Aleksander Skenderi , Jaan Amla Srimurthy , Rou Wen , Andrew Zimmer

Suppose that Y is a complex manifold with the property that any holomorphic map from a compact convex set in a complex Euclidean space C^n (for any n) to Y is a uniform limit of entire maps from C^n to Y. We prove that a holomorphic map…

Complex Variables · Mathematics 2007-05-23 Franc Forstneric

In this note, we prove a rigidity result for proper holomorphic maps between unit balls that have many symmetries and which extend to $\mathcal{C}^2$-smooth maps on the boundary.

Complex Variables · Mathematics 2023-05-31 Edgar Gevorgyan , Haoran Wang , Andrew Zimmer

We prove the following theorem: Let X be a Stein manifold of dimension at least 2 and Y a closed complete pluripolar subset of X. Given a point p in the complement of Y there is a proper holomorphic map f from the unit disc to X such that…

Complex Variables · Mathematics 2007-05-23 Barbara Drinovec Drnovsek

Let D be a domain in C^n with smooth boundary, of finite 1-type at a point p in the boundary and such that the closure of D has a basis of Stein Runge neighborhoods. Assume that there exists an analytic disc which intersects the closure of…

Complex Variables · Mathematics 2020-01-24 Barbara Drinovec Drnovsek , Marko Slapar

We study the existence or not of harmonic diffeomorphisms between certain domains in the Euclidean 2-sphere. In particular, we show harmonic diffeomorphisms from circular domains in the complex plane onto finitely punctured spheres, with at…

Differential Geometry · Mathematics 2011-10-04 Antonio Alarcon , Rabah Souam

In this paper, we establish second main theorems for holomorphic maps with finite growth index on complex discs intersecting families of hypersurfaces (moving and fixed) in projective varieties, where the small term is detailed estimate for…

Complex Variables · Mathematics 2024-06-05 Si Duc Quang

In this paper we prove a Rad\'o type result showing that there is no univalent polyharmonic mapping of the unit disk onto the whole complex plane. We also establish a connection between the boundary functions of harmonic and biharmonic…

Complex Variables · Mathematics 2020-12-09 Daoud Bshouty , Stavros Evdoridis , Antti Rasila

Let $\Sigma$ be a compact oriented surface and $N$ a compact K\"ahler manifold with nonnegative holomorphic bisectional curvature. For a solution of harmonic map flow starting from an almost-holomorphic map $\Sigma \to N$ (in the energy…

Differential Geometry · Mathematics 2025-01-07 Chong Song , Alex Waldron
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