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WEIERSTRASS–KENMOTSU REPRESENTATION OF WILLMORE SURFACES IN SPHERES
Nagoya Mathematical Journal ( IF 0.8 ) Pub Date : 2020-04-27 , DOI: 10.1017/nmj.2020.6 JOSEF F. DORFMEISTER , PENG WANG
Nagoya Mathematical Journal ( IF 0.8 ) Pub Date : 2020-04-27 , DOI: 10.1017/nmj.2020.6 JOSEF F. DORFMEISTER , PENG WANG
A Willmore surface $y:M\rightarrow S^{n+2}$ has a natural harmonic oriented conformal Gauss map $Gr_{y}:M\rightarrow SO^{+}(1,n+3)/SO(1,3)\times SO(n)$ , which maps each point $p\in M$ to its oriented mean curvature 2-sphere at $p$ . An easy observation shows that all conformal Gauss maps of Willmore surfaces satisfy a restricted nilpotency condition, which will be called “strongly conformally harmonic.” The goal of this paper is to characterize those strongly conformally harmonic maps from a Riemann surface $M$ to $SO^{+}(1,n+3)/SO^{+}(1,3)\times SO(n)$ , which are the conformal Gauss maps of some Willmore surface in $S^{n+2}.$ It turns out that generically, the condition of being strongly conformally harmonic suffices to be associated with a Willmore surface. The exceptional case will also be discussed.
中文翻译:
Weierstrass-Kenmotsu 表示球体中的威尔莫尔曲面
威尔莫尔曲面$y:M\rightarrow S^{n+2}$ 有一个自然谐波取向的共形高斯图$Gr_{y}:M\rightarrow SO^{+}(1,n+3)/SO(1,3)\times SO(n)$ ,它映射每个点$p\in M$ 到其定向平均曲率 2 球体$p$ . 一个简单的观察表明,Willmore 曲面的所有共形高斯图都满足一个受限的幂等性条件,这将被称为“强共形谐波”。本文的目的是从黎曼曲面表征那些强共形谐波映射$M$ 到$SO^{+}(1,n+3)/SO^{+}(1,3)\times SO(n)$ , 这是一些 Willmore 曲面的保形高斯图$S^{n+2}.$ 事实证明,一般来说,强共形调和的条件足以与 Willmore 曲面相关联。特殊情况也将讨论。
更新日期:2020-04-27
中文翻译:
Weierstrass-Kenmotsu 表示球体中的威尔莫尔曲面
威尔莫尔曲面