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arXiv 0709.1776math.DGmath.AP
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Heisenberg群中具有给定p-中曲率的C^{1}光滑曲面的正则性

Regularity of C^{1} smooth surfaces with prescribed p-mean curvature in the Heisenberg group

Jih-Hsin Cheng, Jenn-Fang Hwang, Paul Yang

摘要:

本文考虑三维Heisenberg群中具有给定$p$(或$H$)-中曲率的$C^{1}$光滑曲面.本文证明了在非奇异区域$p$中,任何特征曲线都是$H\in C^{0},$光滑的,其(线)曲率等于$-H$。通过引入特征坐标,利用沿特征曲线的跳跃公式,我们可以证明Legendrian(或水平)法线多一阶导数。因此,种子曲线是$C^{2}$平滑的。在较弱的条件下,我们还分别得到了过公共点的特征曲线和种子曲线的唯一性。这些结果可以应用到更一般的情况。

英文摘要:

We consider a $C^{1}$ smooth surface with prescribed $p$(or $H$)-mean curvature in the 3-dimensional Heisenberg group. Assuming only the prescribed $p$-mean curvature $H\in C^{0},$ we show that any characteristic curve is $C^{2}$ smooth and its (line) curvature equals $-H$ in the nonsingular domain$.$ By introducing characteristic coordinates and invoking the jump formulas along characteristic curves, we can prove that the Legendrian (or horizontal) normal gains one more derivative. Therefore the seed curves are $C^{2}$ smooth. We also obtain the uniqueness of characteristic and seed curves passing through a common point under some mild conditions, respectively. These results can be applied to more general situations.

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