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arXiv 2104.09377math.DG
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具有4个不同主曲率的空间型中的三调和CMC超曲面

Triharmonic CMC hypersurfaces in space forms with 4 distinct principal curvatures

Hang Chen, Zhida Guan

摘要:

三调和映射是两个黎曼流形之间的光滑映射空间中三能量的临界点。本文证明了:如果$M^n (n\ge 4)$是具有四个不同主曲率的空间形式$\mathbb{R}^{n+1}(c)$中的CMC真三调和超曲面,且零主曲率的重数至多为1,则$M$具有常数量曲率.特别地,当$c\le 0$满足时,我们得到了$\mathbb{R}^5(c)$中的任意CMC真三调和超曲面都是极小的,从而支持了广义Chen猜想.我们还给出了$\mathbb{S}^5$中CMC真三调和超曲面的一些特征。

英文摘要:

A triharmonic map is a critical point of the tri-energy in the space of smooth maps between two Riemannian manifolds. In this paper, we prove that if $M^n (n\ge 4)$ is a CMC proper triharmonic hypersurface in a space form $\mathbb{R}^{n+1}(c)$ with four distinct principal curvatures and the multiplicity of the zero principal curvature is at most one, then $M$ has constant scalar curvature. In particular, we obtain any CMC proper triharmonic hypersurface in $\mathbb{R}^5(c)$ is minimal when $c\le 0$, which supports the generalized Chen's conjecture. We also give some characterizations of CMC proper triharmonic hypersurfaces in $\mathbb{S}^5$.

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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