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We construct equivariant harmonic maps between cohomogeneity one manifolds.

微分几何 · 数学 2026-02-05 Anna Siffert

The present paper is devoted to the study of mappings with finite distortion on Riemannian manifolds. Theorems on local behavior of generalized quasiisometries with unbounded characteristic of quasiconformality are obtained.

复变函数 · 数学 2015-12-22 E. A. Sevost'yanov , S. A. Skvortsov

We mainly investigate some properties of quasiconformal mappings between smooth 2-dimensional surfaces with boundary in the Euclidean space, satisfying certain partial differential equations (inequalities) concerning Laplacian, and in…

复变函数 · 数学 2012-02-21 David Kalaj , Miodrag Mateljevic

We prove under certain conditions that any stable unfolding of a quasi-homogeneous map-germ with finite singularity type is substantial. We then prove that if an equidimensional map-germ is finitely determined, of corank 1, and either it…

代数几何 · 数学 2025-04-09 Ignacio Breva Ribes , Raúl Oset Sinha

We study the class $HQ(\mathbb{D})$, the set of harmonic quasiconformal automorphisms of the unit disk $\mathbb{D}$ in the complex plane, endowed with the topology of uniform convergence. Several important topological properties of this…

复变函数 · 数学 2023-04-11 Florian Biersack

This note examines sufficient conditions for the quasiconformal extendibility of harmonic mappings defined in the unit disk. It is demonstrated that a harmonic strongly starlike mapping admits a quasiconformal extension to the entire plane,…

复变函数 · 数学 2025-09-03 Xiu-Shuang Ma

This paper investigates quasi-isometries between graphs with variable edge lengths. A quasi-isometry is a mapping between metric spaces that approximately preserves distances, allowing for a bounded amount of additive and multiplicative…

组合数学 · 数学 2025-03-11 James Davies , Meike Hatzel , Robert Hickingbotham

This is a survey of old and new results on the problem when a compatible almost complex structure on a Riemannian manifold is a harmonic section or a harmonic map from the manifold into its twistor space. In this context, a special…

微分几何 · 数学 2016-11-18 Johann Davidov

Information transfer between triangle meshes is of great importance in computer graphics and geometry processing. To facilitate this process, a smooth and accurate map is typically required between the two meshes. While such maps can…

图形学 · 计算机科学 2018-01-09 Danielle Ezuz , Justin Solomon , Mirela Ben-Chen

Locally harmonic manifolds are Riemannian manifolds in which small geodesic spheres are isoparametric hypersurfaces, i.e., hypersurfaces whose nearby parallel hypersurfaces are of constant mean curvature. Flat and rank one symmetric spaces…

微分几何 · 数学 2024-01-02 Balázs Csikós , Márton Horváth

In this paper we show that even in the case of simply connected minimal algebraic surfaces of general type, deformation and differentiable equivalence do not coincide. Exhibiting several simple families of surfaces which are not deformation…

代数几何 · 数学 2007-05-23 Fabrizio Catanese , Bronislaw Wajnryb

In this note, we survey our recent work concerning cohomologies of harmonic bundles on quasi-compact Kaehler manifolds.

代数几何 · 数学 2008-01-13 Juergen Jost , Yi-Hu Yang , Kang Zuo

In this paper, we classify the three-dimensional contact partially hyperbolic diffeomorphisms whose stable, unstable and central distributions are smooth, and whose non-wandering set equals the whole manifold. We prove that up to a finite…

微分几何 · 数学 2021-01-11 Martin Mion-Mouton

We construct sense-preserving univalent harmonic mappings which map the unit disk onto a domain which is convex in the horizontal direction, but with varying dilatation. Also, we obtain minimal surfaces associated with such harmonic…

复变函数 · 数学 2015-08-04 YuePing Jiang , ZhiHong Liu , Saminathan Ponnusamy

We prove that for any open Riemann surface $N,$ natural number $n\geq 3,$ non-constant harmonic map $h:N\to \mathbb{R}^{n-2}$ and holomorphic 2-form $H$ on $N,$ there exists a weakly complete harmonic map $X=(X_j)_{j=1,\ldots,n}:N \to…

微分几何 · 数学 2010-07-23 Antonio Alarcon , Isabel Fernandez , Francisco J. Lopez

We investigate submanifolds in space forms such that every geodesic orthogonal to the submanifold intersects a fixed totally geodesic submanifold. We obtain an application to horospheres in Hadamard manifolds.

A hypersurface is said to be totally biharmonic if all its geodesics are biharmonic curves in the ambient space. We prove that a totally biharmonic hypersurface into a space form is an isoparametric biharmonic hypersurface, which allows us…

微分几何 · 数学 2019-12-24 Stefano Montaldo , Alvaro Pampano

$f$-Biharmonic maps are generalizations of harmonic maps and biharmonic maps. In this paper, we obtain some descriptions of $f$-biharmonic curves in a space form. We also obtain a complete classification of proper $f$-biharmonic isometric…

微分几何 · 数学 2024-02-13 Ze-Ping Wang , Li-Hua Qin

In this paper, we prove some new inequalities of Hadamard-type for s-convex functions on the co-ordinates.

经典分析与常微分方程 · 数学 2012-03-22 M. Emin Ozdemir , Mevlut Tunc , Ahmet Ocak Akdemir

In this paper we study quasi-symmetric conjugations of $C^2$ weakly order-preserving circle maps with a flat interval. Under the assumption that the maps have the same rotation number of bounded type and that bounded geometry holds we…

动力系统 · 数学 2019-02-20 Liviana Palmisano