Regularity of the level set flow
classification
🧮 math.DG
math.AP
keywords
derivativeflowlevelsecondsingularadvancingbecomesbounded
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We showed earlier that the level set function of a monotonic advancing front is twice differentiable everywhere with bounded second derivative. We show here that the second derivative is continuous if and only if the flow has a single singular time where it becomes extinct and the singular set consists of a closed $C^1$ manifold with cylindrical singularities.
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