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arXiv 1209.0895math.DG
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$f$ -极小曲面与具有正$m$ -Bakry-Emery里奇曲率的流形

$f$-minimal surface and manifold with positive $m$-Bakry-Émery Ricci curvature

Haizhong Li, Yong Wei

摘要:

本文首先证明了具有正Bakry-Émery里奇曲率的闭三流形中固定拓扑的闭嵌入$f$ -极小曲面空间的一个紧性定理。然后给出了具有正$m$-Bakry-Émery里奇曲率的紧致流形上$f$-Laplacian的第一特征值的Lichnerowicz型下界,并证明了该下界仅当流形等距于$n$ -球面或$n$ -维半球时才能达到.最后,对于具有正$m$ -Bakry-Émery里奇曲率和$f$ -平均凸边界的紧致流形,证明了到边界的距离函数的一个上界,并且当流形等距于一个欧氏球时,这个上界是可达到的.

英文摘要:

In this paper, we first prove a compactness theorem for the space of closed embedded $f$-minimal surfaces of fixed topology in a closed three-manifold with positive Bakry-Émery Ricci curvature. Then we give a Lichnerowicz type lower bound of the first eigenvalue of the $f$-Laplacian on compact manifold with positive $m$-Bakry-Émery Ricci curvature, and prove that the lower bound is achieved only if the manifold is isometric to the $n$-shpere, or the $n$-dimensional hemisphere. Finally, for compact manifold with positive $m$-Bakry-Émery Ricci curvature and $f$-mean convex boundary, we prove an upper bound for the distance function to the boundary, and the upper bound is achieved if only if the manifold is isometric to an Euclidean ball.

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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