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
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影响因子:
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通讯作者:
Albert Chau;B. Weinkove
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文献类型:
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作者:
Albert Chau;B. Weinkove
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.