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MEAN CURVATURE FLOW

机译:平均弯曲流量

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摘要

Mean curvature flow is the negative gradient flow of volume, so any hypersurface flows through hypersurfaces in the direction of steepest descent for volume and eventually becomes extinct in finite time. Before it becomes extinct, topological changes can occur as it goes through singularities. If the hypersurface is in general or generic position, then we explain what singularities can occur under the flow, what the flow looks like near these singularities, and what this implies for the structure of the singular set. At the end, we will briefly discuss how one may be able to use the flow in low-dimensional topology.
机译:平均曲率流是体积的负梯度流,因此任何超曲面都将在最陡下降的方向上流过曲面,并最终在有限时间内消失。在它灭绝之前,随着奇异性的发生,可能会发生拓扑变化。如果超曲面处于一般位置或一般位置,那么我们将说明在流下会发生什么奇点,在这些奇点附近流看起来是什么,以及这对奇异集的结构意味着什么。最后,我们将简要讨论如何在低维拓扑中使用流。

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