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Weak maximum principle for biharmonic equations in quasiconvex Lipschitz domains

机译:Quasiconvex Lipschitz域中的比较的最大原理原理

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摘要

In dimension two or three, the weak maximum principle for biharmonic equation is valid in any bounded Lipschitz domains. In higher dimensions (greater than three), it was only known that the weak maximum principle holds in convex domains or C-1 domains, and may fail in general Lipschitz domains. In this paper, we prove the weak maximum principle in higher dimensions in quasiconvex Lipschitz domains, which is a sharp condition in some sense and recovers both convex and C-1 domains. (C) 2020 Elsevier Inc. All rights reserved.
机译:在二维或三维空间中,双调和方程的弱极大值原理在任何有界Lipschitz区域都是有效的。在高维(大于3维)中,我们只知道弱极大值原理在凸域或C-1域中成立,在一般的Lipschitz域中可能失败。本文证明了拟凸Lipschitz域的高维弱极大值原理,它在某种意义上是一个尖锐的条件,同时恢复了凸域和C-1域。(C) 2020爱思唯尔公司版权所有。

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