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In this paper, we consider the pseudoharmonic heat flow with small initial horizontal energy and give the existence of pseudoharmonic maps from closed pseudo-Hermitian manifolds to closed Riemannian manifolds.

Differential Geometry · Mathematics 2023-03-03 BiQiang Zhao

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

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

We study the Ricci flow for initial metrics which are C^0 small perturbations of the Euclidean metric on R^n. In the case that this metric is asymptotically Euclidean, we show that a Ricci harmonic map heat flow exists for all times, and…

Differential Geometry · Mathematics 2007-06-05 Oliver C. Schnürer , Felix Schulze , Miles Simon

We consider the hydrodynamics for the biaxial nematic phase characterized by a field of orthonormal frame, which can be derived from a molecular-theory-based tensor model. In dimension two and three, we establish the local well-posedness…

Analysis of PDEs · Mathematics 2022-07-01 Sirui Li , Chenchen Wang , Jie Xu

We consider the Cauchy problem to the two-dimensional incompressible liquid crystal equation and the heat flows of harmonic maps equation. Under a natural geometric angle condition, we give a new proof of the global well-posedness of smooth…

Analysis of PDEs · Mathematics 2012-10-08 Zhen Lei , Dong Li , Xiaoyi Zhang

The paper considers the Ricci flow, coupled with the harmonic map flow between two manifolds. We derive estimates for the fundamental solution of the corresponding conjugate heat equation and we prove an analog of Perelman's differential…

Differential Geometry · Mathematics 2013-10-08 Mihai Băileşteanu , Hung Tran

We study the equivariant harmonic map heat flow, Schr\"odinger maps equation, and generalized Landau-Lifshitz equation from $\mathbb{C}^n$ to $\mathbb{C}\mathbb{P}^n$. By means of a careful geometric analysis, we determine a new, highly…

Analysis of PDEs · Mathematics 2018-04-24 James Fennell

In this paper, we establish the local well-posedness for the Cauchy problem of the simplified version of hydrodynamic flow of nematic liquid crystals (\ref{LLF}) in $\mathbb R^3$ for any initial data $(u_0,d_0)$ having small…

Analysis of PDEs · Mathematics 2015-06-11 Jay Hineman , Changyou Wang

Let $\{u_n\}$ be a sequence of maps from a compact Riemann surface $M$ with smooth boundary to a general compact Riemannian manifold $N$ with free boundary on a smooth submanifold $K\subset N$ satisfying \[ \sup_n \ \left(\|\nabla…

Differential Geometry · Mathematics 2018-09-20 Juergen Jost , Lei Liu , Miaomiao Zhu

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 study of hydrodynamics of liquid crystal leads to many fasci- nating mathematical problems, which has prompted various interesting works recently. This article reviews the static Oseen-Frank theory and surveys some recent progress on…

Analysis of PDEs · Mathematics 2015-06-22 Fanghua Lin , Changyou Wang

We estimate the heat kernel on a closed Riemannian manifold $M$, with $dim(M)\geq 3$, evolving under the Ricci-harmonic map flow and the result depends on some constants arising from a Sobolev imbedding theorem. In a special case, when the…

Differential Geometry · Mathematics 2013-09-03 Mihai Băileşteanu

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 establish effective existence and uniqueness for the heat flow on time-dependent Riemannian manifolds, under minimal assumptions tailored towards the study of Ricci flow through singularities. The main point is that our estimates only…

Differential Geometry · Mathematics 2020-06-30 Beomjun Choi , Jianhui Gao , Robert Haslhofer , Daniel Sigal

For any smoothly bounded domain $\Omega\subset\mathbb R^n$, $n\geq 3$, and any exponent $p>2^*=2n/(n-2)$ we study the Lane-Emden heat flow $u_t-\Delta u = |u|^{p-2}u$ on $\Omega\times]0,\infty[$ and establish local and global well-posedness…

Analysis of PDEs · Mathematics 2015-11-25 Simon Blatt , Michael Struwe

In this paper we introduce conformal heat flow of (extrinsic) biharmonic maps on $4$-manifold, simply called bi-conformal heat flow (bi-CHF), and study its properties. Similar to other CHF of harmonic maps and regularized $n$-harmonic maps,…

Differential Geometry · Mathematics 2026-03-05 Woongbae Park

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 study harmonic map heat flow along ancient super Ricci flow, and derive several Liouville theorems with controlled growth from Perelman's reduced geometric viewpoint. For non-positively curved target spaces, our growth condition is…

Differential Geometry · Mathematics 2021-08-04 Keita Kunikawa , Yohei Sakurai

We consider the harmonic heat flow for maps from a compact Riemannian manifold into a Riemannian manifold that is complete and of non-positive curvature. We prove that if the harmonic heat flow converges to a limiting harmonic map that is a…

Differential Geometry · Mathematics 2021-05-18 Ivo Slegers