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We extend harmonic map techniques to the setting of more general differential equations in conformal geometry. We obtain an extension of Siu's rigidity to Kahler-Weyl geometry and apply the latter to Vaisman's conjecture. Other applications…

Differential Geometry · Mathematics 2014-02-26 Gerasim Kokarev

In this paper we are concerned with harmonic maps and minimal immersions defined on compact Riemannian manifolds and with values in homogenous strongly harmonic manifolds. We show some results on the Morse index by varying these maps along…

Differential Geometry · Mathematics 2010-04-16 Mohammed Benalili , Hafida Benallal

In this paper we construct gluing maps and cobordism maps for sutured monopole Floer homology.

Geometric Topology · Mathematics 2021-12-01 Zhenkun Li

Harmonicity of holomorphic maps between various subclasses of almost contact metric manifolds is discussed. Consequently, some new results are obtained. Also some known results are recovered, some of them are generalized and some of them…

Differential Geometry · Mathematics 2023-02-27 Sadettin Erdem

As a generalization of holomorphic submersions, anti-invariant submersions and slant submersions, we introduce slant Riemannian maps from almost Hermitian manifolds to Riemannian manifolds. We give examples, obtain the existence conditions…

Differential Geometry · Mathematics 2012-06-19 Bayram Sahin

In this paper we continue the investigation of the regularity of the so-called weak $\frac{n}{p}$-harmonic maps in the critical case. These are critical points of the following nonlocal energy \[ {\mathcal{L}}_s(u)=\int_{\mathbb{R}^n}| (…

Analysis of PDEs · Mathematics 2017-11-15 Francesca Da Lio , Armin Schikorra

We introduce the notion of Riemannian twistorial structure and we show that it provides new natural constructions of harmonic maps.

Differential Geometry · Mathematics 2018-05-03 G. Deschamps , E. Loubeau , R. Pantilie

We study conformal harmonic coordinates on Riemannian manifolds. These are coordinates constructed as quotients of solutions to the conformal Laplace equation. We show their existence under general conditions. We find that conformal…

Differential Geometry · Mathematics 2019-12-23 Matti Lassas , Tony Liimatainen

In this paper, we consider maps from pseudo-Hermitian manifolds to K\"{a}hler manifolds and introduce partial energy functionals for these maps. First, we obtain a foliated Lichnerowicz type result on general pseudo-Hermitian manifolds,…

Differential Geometry · Mathematics 2025-04-03 Yuxin Dong , Hui Liu , Biqiang Zhao

We investigate horizontal conformality of a differential of a map between Riemannian manifolds where the tangent bundles are equipped with Cheeger--Gromoll type metrics. As a corollary, we characterize the differential of a map as a…

Differential Geometry · Mathematics 2009-08-05 Wojciech Kozlowski , Kamil Niedzialomski

In this paper, we construct geometrically finite rational maps with buried critical points on the boundaries of some hyperbolic components by using the pinching and plumbing deformations.

Dynamical Systems · Mathematics 2020-02-11 Yan Gao , Luxian Yang , Jinsong Zeng

We glue two manifolds which have curvature operators at least k (in the sense of eigenvalues) along their common boundary. We show that if the sum of the second fundamental forms of the boundary is positive semidefinite, then the curvature…

Differential Geometry · Mathematics 2012-10-11 Arthur Schlichting

Biharmonic maps are the critical points of the bienergy functional and generalise harmonic maps. We investigate the index of a class of biharmonic maps, derived from minimal Riemannian immersions into spheres. This study is motivated by…

Differential Geometry · Mathematics 2007-05-23 E. Loubeau , C. Oniciuc

Let $f$ be a harmonic map from a Riemann surface to a Riemannian $n$-manifold. We prove that if there is a holomorphic diffeomorphism $h$ between open subsets of the surface such that $f\circ h = f$, then $f$ factors through a holomorphic…

Differential Geometry · Mathematics 2020-10-29 Nathaniel Sagman

We establish a duality between harmonic maps from Riemann surfaces to hyperbolic 3-space $\mathbb{H}^3$ and harmonic maps from Riemann surfaces to de Sitter three-space $\operatorname{dS}_3$, best viewed as a generalized Gauss map. On the…

Differential Geometry · Mathematics 2025-11-24 Sebastian Heller , Lothar Schiemanowski , Hartmut Weiss

We consider stabilities for the weighted length or energy functional of a discrete map from a finite weighted graph $(X,m_{E})$ into a smooth Riemannian manifold $(M,g)$. We prove the non-existence of a stable discrete minimal immersion or…

Differential Geometry · Mathematics 2023-06-27 Toru Kajigaya

In this paper, we discuss the heat flow of a pseudo-harmonic map from a closed pseudo-Hermitian manifold to a Riemannian manifold with non-positive sectional curvature, and prove the existence of the pseudo-harmonic map which is a…

Differential Geometry · Mathematics 2017-09-05 Yibin Ren , Guilin Yang

We prove that for any open Riemann surface $M$ and any non constant harmonic function $h:M \to \mathbb{R},$ there exists a complete conformal minimal immersion $X:M \to \mathbb{R}^3$ whose third coordinate function coincides with $h.$ As a…

Differential Geometry · Mathematics 2009-10-23 Antonio Alarcon , Isabel Fernandez , Francisco J. Lopez

We study generic Riemannian submersions from nearly Kaehler manifolds onto Riemannian manifolds. We investigate conditions for the integrability of various distributions arising for generic Riemannian submersions and also obtain conditions…

Differential Geometry · Mathematics 2020-08-19 Rupali Kaushal , Rashmi Sachdeva , Rakesh Kumar , R. K. Nagaich

We investigate the structure of a harmonic morphism $F$ from a Riemannian 4-manifold M^4 to a 2-surface $N^2$ near a critical point $m_0$. If $m_0$ is an isolated critical point or if $M^4$ is compact without boundary, we show that $F$ is…

Differential Geometry · Mathematics 2013-07-16 Ali Makki , Marina Ville