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arXiv math/0703694math.DGmath.AP
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中曲率流的唯一性和伪局部性定理

Uniqueness and Pseudolocality Theorems of the Mean Curvature Flow

Bing-Long Chen, Le Yin

摘要:

中曲率流在周围流形$\bar{M}$中沿其中曲率方向等距浸入基流形$M$。如果基流形$M$是紧的,则中曲率流的短时存在唯一性是众所周知的。对于任意余维的完备等距浸入子流形,其存在性和唯一性即使在欧几里得空间中也没有得到解决。本文肯定地解决了一般余维和一般环境流形的中曲率流的唯一性问题。第二部分受里奇流的启发,证明了中曲率流的一个伪局部性定理。结果,我们得到了一个强唯一性定理,它消除了关于解的第二基本型有界性的假设。

英文摘要:

Mean curvature flow evolves isometrically immersed base manifolds $M$ in the direction of their mean curvatures in an ambient manifold $\bar{M}$. If the base manifold $M$ is compact, the short time existence and uniqueness of the mean curvature flow are well-known. For complete isometrically immersed submanifolds of arbitrary codimensions, the existence and uniqueness are still unsettled even in the Euclidean space. In this paper, we solve the uniqueness problem affirmatively for the mean curvature flow of general codimensions and general ambient manifolds. In the second part of the paper, inspired by the Ricci flow, we prove a pseudolocality theorem of mean curvature flow. As a consequence, we obtain a strong uniqueness theorem, which removes the assumption on the boundedness of the second fundamental form of the solution.

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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