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This paper discusses a more general contractive condition for a class of extended cyclic self-mappings on the union of a finite number of subsets of a metric space which are allowed to have a finite number of successive images in the same…

Functional Analysis · Mathematics 2012-08-06 M. De la Sen

The tetrablock is a domain in 3-dimensional complex space that meets 3-dimensional Euclidean space in a regular tetrahedron. It is shown to be inhomogeneous and its automorphism group is determined. A type of Schwarz lemma for the…

Complex Variables · Mathematics 2014-02-26 N. J. Young

This paper deals with holomorphic self-maps of the complex projective plane and the algebraic relations among the eigenvalues of the derivatives at the fixed points. These eigenvalues are constrained by certain index theorems such as the…

Algebraic Geometry · Mathematics 2019-11-01 Adolfo Guillot , Valente Ramírez

The classical Julia-Wolff-Caratheodory Theorem is one of the main tools to study the boundary behavior of holomorphic self-maps of the unit disc of $\C$. In this paper we prove a Julia-Wolff-Caratheodory's type theorem in the case of the…

Complex Variables · Mathematics 2007-05-23 Chiara Frosini

We consider convex maps f:R^n -> R^n that are monotone (i.e., that preserve the product ordering of R^n), and nonexpansive for the sup-norm. This includes convex monotone maps that are additively homogeneous (i.e., that commute with the…

Spectral Theory · Mathematics 2007-05-23 Marianne Akian , Stephane Gaubert

We prove that a a strongly convex planar domain (Birkhoff table) with dihedral symmetry, which is sufficiently close in a finitely smooth topology to an ellipse, is deformationally spectrally rigid within the class of domains preserving…

Dynamical Systems · Mathematics 2026-02-03 Corentin Fierobe , Vadim Kaloshin , Alfonso Sorrentino

In this paper we study the rigidity of proper holomorphic maps $f\colon \Omega\to\Omega'$ between irreducible bounded symmetric domains $\Omega$ and $\Omega'$ with small rank differences: $2\leq \text{rank}(\Omega')<…

Complex Variables · Mathematics 2025-01-14 Sung-Yeon Kim , Ngaiming Mok , Aeryeong Seo

We classify compact complex surfaces whose groups of bimeromorphic selfmaps have bounded finite subgroups. We also prove that the stabilizer of a point in the automorphism group of a compact complex surface of zero Kodaira dimension, as…

Algebraic Geometry · Mathematics 2021-02-03 Yuri Prokhorov , Constantin Shramov

In this paper, we prove the main properties of the set of fixed points of an holomorphic map from a bounded domain in C^n into itself.

Complex Variables · Mathematics 2010-04-12 Jean-Pierre Vigue

We classify the tube domains in C^4 with affinely homogeneous base whose boundary contains a non-degenerate affinely homogeneous hypersurface. It follows that these domains are holomorphically homogeneous and amongst them there are four new…

Complex Variables · Mathematics 2007-05-23 Michael Eastwood , Vladimir Ezhov , Alexander Isaev

In this paper, pointwise convergence, uniform convergence and compact convergence of sequences of holomorphic functions on an open subset of the complex plane are compared from a linear point of view. In fact, it is proved the existence of…

Complex Variables · Mathematics 2025-03-14 L. Bernal-González , M. C. Calderón-Moreno , J. López-Salazar , J. A. Prado-Bassas

In this article, we construct countably many mutually non-isotopic diffeomorphisms of some closed non simply-connected 4-manifolds that are homotopic to but not isotopic to the identity, by surgery along $\Theta$-graphs. As corollaries of…

Geometric Topology · Mathematics 2023-02-24 Tadayuki Watanabe

Pseudoconvexity of a domain in $\Bbb C^n$ is described in terms of the existence of a locally defined plurisubharmonic/holomorphic function near any boundary point that is unbounded at the point.

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug , Pascal J. Thomas , Wlodzimierz Zwonek

It is known that the classical Banach--Stone theorem does not extend to the class of $AC(\sigma)$ spaces of absolutely continuous functions defined on compact subsets of the complex plane. On the other hand, if $\sigma$ is restricted to the…

Functional Analysis · Mathematics 2018-10-23 Ian Doust , Shaymaa Al-shakarchi

We prove that a closed convex subset $C$ of a real Hilbert space $X$ has the fixed point property for $(c)$-mappings if and only if $C$ is bounded. Some convergence results about the iterations are obtained.

Functional Analysis · Mathematics 2025-11-04 Sami Atailia , Abdelkader Dehici , Najeh Redjel

In this paper, we investigate the geometric properties of complex-valued pluriharmonic mappings defined over convex Reinhardt domains in $\mathbb{C}^n$. We first establish a multidimensional analogue of the Noshiro-Warschawski Theorem,…

Complex Variables · Mathematics 2026-02-03 Molla Basir Ahamed , Sujoy Majumder , Debabrata Pramanik

Consider a holomorphic automorphism which acts hyperbolically on some invariant compact set. Then for every point in the compact set there exists a stable manifold, which is a complex manifold diffeomorphic to real Euclidean space. If the…

Complex Variables · Mathematics 2014-04-23 Alberto Abbondandolo , Leandro Arosio , John Erik Fornæss , Pietro Majer , Han Peters , Jasmin Raissy , Liz Vivas

We characterize finite sets $S$ of nonwandering points for generic diffeomorphisms $f$ as those which are {\em uniformly bounded}, i.e., there is an uniform bound for small perturbations of the derivative of $f$ along the points in $S$ up…

Dynamical Systems · Mathematics 2011-10-26 C. A. Morales

In this paper, we first define two classes of holomorphic mappings defined on the unit ball $B^n$ of n-dimensional complex space $\mathbb{C}^n$ and obtain the lower estimates for Bloch's constant for these classes. Also, we derive the…

Complex Variables · Mathematics 2026-04-14 Vasudeva Rao Allu , Rohit Kumar

A $2p$-times continuously differentiable complex-valued function $f=u+iv$ in a simply connected domain $\Omega\subseteq\mathbb{C}$ is \textit{p-harmonic} if $f$ satisfies the $p$-harmonic equation $\Delta ^pf=0.$ In this paper, we…

Complex Variables · Mathematics 2012-04-13 SH. Chen , S. Ponnusamy , X. Wang