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We study m-corotational solutions to the Harmonic Map Heat Flow from $\mathbb{R}^2$ to $\mathbb{S}^2$. We first consider maps of zero topological degree, with initial energy below the threshold given by twice the energy of the harmonic map…

Analysis of PDEs · Mathematics 2017-11-20 Stephen Gustafson , Dimitrios Roxanas

Let $B_1$ be the unit open disk in $\Real^2$ and $M$ be a closed Riemannian manifold. In this note, we first prove the uniqueness for weak solutions of the harmonic map heat flow in $H^1([0,T]\times B_1,M)$ whose energy is non-increasing in…

Differential Geometry · Mathematics 2010-10-19 Lu Wang

In this paper, we first establish regularity of the heat flow of biharmonic maps into the unit sphere $S^L\subset\mathbb R^{L+1}$ under a smallness condition of renormalized total energy. For the class of such solutions to the heat flow of…

Analysis of PDEs · Mathematics 2025-06-30 Jay Hineman , Tao Huang , Changyou Wang

The conformal heat flow of harmonic maps is a system of evolution equations combined with harmonic map flow with metric evolution in conformal direction. It is known that global weak solution of the flow exists and smooth except at mostly…

Differential Geometry · Mathematics 2025-02-21 Woongbae Park

We introduce and study a conformal heat flow of harmonic maps defined by an evolution equation for a pair consisting of a map and a conformal factor of metric on the two-dimensional domain. This flow is designed to postpone finite time…

Differential Geometry · Mathematics 2024-06-07 Woongbae Park

The heat flow for Dirac-harmonic maps on Riemannian spin manifolds is a modification of the classical heat flow for harmonic maps by coupling it to a spinor. It was introduced by Chen, Jost, Sun, and Zhu as a tool to get a general existence…

Differential Geometry · Mathematics 2017-05-26 Johannes Wittmann

Motivated by emerging applications from imaging processing, the heat flow of a generalized $p$-harmonic map into spheres is studied for the whole spectrum, $1\leq p<\infty$, in a unified framework. The existence of global weak solutions is…

Analysis of PDEs · Mathematics 2007-12-18 John W. Barrett , Xiaobing Feng , Andreas Prohl

In this article, we study the the harmonic map heat flow from a manifold with conic singularities to a closed manifold. In particular, we have proved the short time existence and uniqueness of solutions as well as the existence of global…

Analysis of PDEs · Mathematics 2019-08-02 Yuanzhen Shao , Changyou Wang

We introduce a new approach to prove the global existence and uniqueness of suitable weak solutions of the heat flow of harmonic mappings into CAT(0) metric spaces. Our method allows also to prove Lipschitz continuity in spatial variables…

Analysis of PDEs · Mathematics 2026-04-07 Fang-Hua Lin , Antonio Segatti , Yannick Sire , Changyou Wang

In this paper, we establish the uniqueness of heat flow of harmonic maps into (N, h) that have sufficiently small renormalized energies, provided that N is either a unit sphere $S^{k-1}$ or a compact Riemannian homogeneous manifold without…

Analysis of PDEs · Mathematics 2016-11-11 Tao Huang , Changyou Wang

Let $(M,g)$ be a four dimensional compact Riemannian manifold with boundary and $(N,h)$ be a compact Riemannian manifold without boundary. We show the existence of a unique, global weak solution of the heat flow of extrinsic biharmonic maps…

Analysis of PDEs · Mathematics 2016-09-01 Tao Huang , Lei Liu , Yong Luo , Changyou Wang

In this note we show that weak solutions to the wave map problem in the energy-supercritical dimension 3 are not unique. On the one hand, we find weak solutions using the penalization method introduced by Shatah and show that they satisfy a…

Analysis of PDEs · Mathematics 2015-10-02 Klaus Widmayer

In this work, we obtain a short time existence result for harmonic map heat flow coupled with a smooth family of complete metrics in the domain manifold. Our results generalize short time existence results for harmonic map heat flow by…

Differential Geometry · Mathematics 2021-10-15 Shaochuang Huang , Luen-Fai Tam

We adopt the Koch-Tataru theory for the Navier-Stokes equations, based on Carleson measure estimates, to develop a scaling-critical low-regularity framework for half-harmonic map heat flows. This nonlocal variant of the harmonic map heat…

Analysis of PDEs · Mathematics 2025-09-19 Kilian Koch , Christof Melcher

This paper establish the local (or global, resp.) well-posedness of the heat flow of biharmonic maps from $R^n$ to a compact Riemannian manifold without boundary with small local BMO (or BMO, resp.) norms.

Analysis of PDEs · Mathematics 2010-01-14 Changyou Wang

In this paper, we consider the heat flow for p-pseudoharmonic maps from a closed Sasakian manifold M into a compact Riemannian manifold N. We prove global existence and asymptotic convergence of the solution for the p-pseudoharmonic map…

Differential Geometry · Mathematics 2016-02-02 Shu-Cheng Chang , Yuxin Dong , Yingbo Han

We define and study the harmonic heat flow for almost complex structures which are compatible with a Riemannian structure $(M, g)$. This is a tensor-valued version of harmonic map heat flow. We prove that if the initial almost complex…

Differential Geometry · Mathematics 2019-07-30 Weiyong He , Bo Li

In this paper, we present an alternate, elementary proof of the local Lipschitz regularity of the suitable weak solution of heat flow of harmonic maps into CAT(0)-metric spaces, whose existence was established by Lin, Segatti, Sire, and…

Analysis of PDEs · Mathematics 2026-03-12 Fanghua Lin , Changyou Wang

In this paper, we study the global controllability and stabilization problems of the harmonic map heat flow from a circle to a sphere. Combining ideas from control theory, heat flow, differential geometry, and asymptotic analysis, we obtain…

Analysis of PDEs · Mathematics 2024-02-15 Jean-Michel Coron , Shengquan Xiang

In this paper we develop new methods for studying the convergence problem for the heat flow on negatively curved spaces and prove that any quasiconformal map of the sphere $\mathbb{S}^{n-1}$, $n\geq 3$, can be extended to the…

Differential Geometry · Mathematics 2015-06-16 Marius Lemm , Vladimir Markovic
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