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arXiv 1702.03094math.APcs.NAmath.NA
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各向异性与晶体曲率流的存在性与唯一性

Existence and uniqueness for anisotropic and crystalline mean curvature flows

Antonin Chambolle, Massimiliano Morini, Matteo Novaga, Marcello Ponsiglione

AI总结:

本文研究了带有强迫项和任意凸动力学的晶体曲率流的存在性和唯一性,通过引入新的解定义,证明了在任意维度和初始闭集的情况下,解满足比较原理和稳定性,且处理了时间依赖的有界强迫项。

摘要:

本文证明了在考虑肥大效应的情况下,对于具有强迫项和任意(凸)动力学的晶体曲率流,存在性和唯一性结果成立。这是通过引入对应于水平集形式的新的解概念来实现的。此类解满足比较原理和对合适正则化问题的近似稳定性性质。结果适用于任意维度和任意、可能无界的初始闭集。该方法考虑了时间依赖的有界强迫项,具有空间Lipschitz连续性。作为分析的副产品,解决了Almgren-Taylor-Wang最小化运动方案在一般、可能为晶体的各向异性情况下的收敛问题,即收敛到一个唯一的(在肥大效应下)'平坦流'。

英文摘要:

An existence and uniqueness result, up to fattening, for crystalline mean curvature flows with forcing and arbitrary (convex) mobilities, is proven. This is achieved by introducing a new notion of solution to the corresponding level set formulation. Such a solution satisfies the comparison principle and a stability property with respect to the approximation by suitably regularized problems. The results are valid in any dimension and for arbitrary, possibly unbounded, initial closed sets. The approach accounts for the possible presence of a time-dependent bounded forcing term, with spatial Lipschitz continuity. As a by-product of the analysis, the problem of the convergence of the Almgren-Taylor-Wang minimizing movements scheme to a unique (up to fattening) "flat flow" in the case of general, possibly crystalline, anisotropies is settled.

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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