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arXiv 2107.06458math.DG
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严格凸三流形中的自由边界常中曲率曲面

Free boundary constant mean curvature surfaces in a strictly convex three-manifold

Sung-Hong Min, Keomkyo Seo

摘要:

设$C$是$3$维黎曼流形中截面曲率上界为常数的严格凸域,$Σ$是$C$中具有自由边界的常中曲率曲面.本文给出了$Σ$上无迹第二基本型长度的一个拼挤条件,该条件保证了曲面同胚于圆盘或环面。在同样的Pinching条件下,证明了若$C$是$3$维空间型的测地球,则$Σ$是球冠或Delaunay曲面.

英文摘要:

Let $C$ be a strictly convex domain in a $3$-dimensional Riemannian manifold with sectional curvature bounded above by a constant and let $Σ$ be a constant mean curvature surface with free boundary in $C$. We provide a pinching condition on the length of the traceless second fundamental form on $Σ$ which guarantees that the surface is homeomorphic to either a disk or an annulus. Furthermore, under the same pinching condition, we prove that if $C$ is a geodesic ball of $3$-dimensional space forms, then $Σ$ is either a spherical cap or a Delaunay surface.

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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