Strong space-time convexity and the heat equation

Strong space-time convexity and the heat equation
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DOI:
10.1512/iumj.2021.70.8551
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发表时间:
2019-03
期刊:
arXiv: Analysis of PDEs
影响因子:
--
通讯作者:
Albert Chau;B. Weinkove
Albert Chau;B. Weinkove
中科院分区:
其他
文献类型:
--
作者:
Albert Chau;B. Weinkove

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证明了凸环上热方程时空水平集的局部强凸性,加强了Borell的一个结果。我们的证明介绍了一个抛物型的两点最大值原理的Rosay-Rudin。
We prove local strong convexity of the space-time level sets of the heat equation on convex rings for zero initial data, strengthening a result of Borell. Our proof introduces a parabolic version of a two-point maximum principle of Rosay-Rudin.