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arXiv 1003.6035math.DG
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欧几里得空间中具有常$r$ -中曲率超曲面的几何性质

Some geometric properties of hypersurfaces with constant $r$-mean curvature in Euclidean space

Debora Impera, Luciano Mari, Marco Rigoli

摘要:

设$f:M\ra \erre^{m+1}$是等距浸入超曲面。本文利用作者在\cite{bimari}中的最新结果分析了与$f$的$r$次牛顿张量相关联的微分算子$L_r$的稳定性。这出现在Jacobi算子的变分问题最小化$r$ -中曲率$H_r$。我们发现了两个自然的应用:第一个是在测地球面上$H_r$的积分增长足够快的温和条件下,Gauss映射与$\esse^m$的每个赤道相交无限次;第二类是关于$(r+1)$ -中曲率为零的超曲面。在相似的增长假设下,证明了仿射切空间$f_*T_pM$,$p\in M$填充整个$\erre^{m+1}$ .

英文摘要:

Let $f:M\ra \erre^{m+1}$ be an isometrically immersed hypersurface. In this paper, we exploit recent results due to the authors in \cite{bimari} to analyze the stability of the differential operator $L_r$ associated with the $r$-th Newton tensor of $f$. This appears in the Jacobi operator for the variational problem of minimizing the $r$-mean curvature $H_r$. Two natural applications are found. The first one ensures that, under the mild condition that the integral of $H_r$ over geodesic spheres grows sufficiently fast, the Gauss map meets each equator of $\esse^m$ infinitely many times. The second one deals with hypersurfaces with zero $(r+1)$-mean curvature. Under similar growth assumptions, we prove that the affine tangent spaces $f_*T_pM$, $p\in M$, fill the whole $\erre^{m+1}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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