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arXiv 1612.09092math.AP
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非动力抛物分式障碍问题的正则性

On the regularity of the Non-dynamic Parabolic Fractional Obstacle Problem

Ioannis Athanasopoulos, Luis Caffarelli, Emmanouil Milakis

摘要:

在所谓的非动态抛物型分数阶障碍问题中,给出了如何获得解的空间导数的更高正则性和最佳正则性。进一步证明了在正抛物密度的自由边界点上,解的时间导数是Hölder连续的.最后,在正则自由边界点处,对任意分数$s\in(0,1)$,得到了相应自由边界的时空正则性。

英文摘要:

In the class of the so called non-dynamic Fractional Obstacle Problems of parabolic type, it is shown how to obtain higher regularity as well as optimal regularity of the space derivatives of the solution. Furthermore, at free boundary points of positive parabolic density, it is proven that the time derivative of the solution is Hölder continuous. Finally, at regular free boundary points, space-time regularity of the corresponding free boundary is obtained for any fraction $s\in(0,1)$.

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