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arXiv 0908.3788math.DGmath.APmath.GT
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一般中曲率流I;一般奇点

Generic mean curvature flow I; generic singularities

Tobias H. Colding, William P. Minicozzi

摘要:

长期以来,人们已经证明,从R^3中的一个一般光滑的封闭嵌入曲面开始,中曲率流保持光滑,直到它到达奇点,在奇点附近,流看起来像同心球或圆柱。也就是说,一般流的唯一奇点是球形或圆柱形的。我们将在这里和后续讨论这个猜想。更高维度的情况将在别处讨论。证明这一猜想的关键是要证明在中曲率流动下,收缩的球体、圆柱体和平面是唯一稳定的自收缩体。我们在所有维度上都证明了这一点。这样做的一个简单的结果是,除了球面和柱面之外,所有其他的奇点都可以被摄动掉。

英文摘要:

It has long been conjectured that starting at a generic smooth closed embedded surface in R^3, the mean curvature flow remains smooth until it arrives at a singularity in a neighborhood of which the flow looks like concentric spheres or cylinders. That is, the only singularities of a generic flow are spherical or cylindrical. We will address this conjecture here and in a sequel. The higher dimensional case will be addressed elsewhere. The key in showing this conjecture is to show that shrinking spheres, cylinders and planes are the only stable self-shrinkers under the mean curvature flow. We prove this here in all dimensions. An easy consequence of this is that every other singularity than spheres and cylinders can be perturbed away.

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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