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arXiv 1302.0618math.AP
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Rn中无辐散型周期全变差流

Periodic total variation flow of non-divergence type in Rn

Mi-Ho Giga, Yoshikazu Giga, Norbert Pozar

摘要:

本文对任意维周期区域上一类非散度型的非常奇异的非线性抛物问题引入了一个新的黏性解的概念,该问题在零斜率的平坦部分上的扩散是如此之强以至于它成为一个非局部量.这些问题包括经典的全变差流和由晶体中曲率引起的表面运动。建立了比较原理,正则化抛物问题的逼近稳定性,以及一般连续初值的存在性定理。

英文摘要:

We introduce a new notion of viscosity solutions for a class of very singular nonlinear parabolic problems of non-divergence form in a periodic domain of arbitrary dimension, whose diffusion on flat parts with zero slope is so strong that it becomes a nonlocal quantity. The problems include the classical total variation flow and a motion of a surface by a crystalline mean curvature. We establish a comparison principle, the stability under approximation by regularized parabolic problems, and an existence theorem for general continuous initial data.

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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