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arXiv 0909.0061math.AP
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Lipschitz域上Laplacian算子的混合问题

The mixed problem for the Laplacian in Lipschitz domains

Katharine A. Ott, Russell M. Brown

摘要:

本文考虑R^n中Laplacian算子在有界Lipschitz区域上的混合边值问题或Zaremba问题.我们指定Dirichlet数据的部分边界和诺依曼数据的其余部分的边界。我们假设我们指定狄利克雷和诺依曼数据的集合之间的边界是Lipschitz曲面。我们要求Neumann数据在L^p中,Dirichlet数据在索伯列夫空间中,其中函数在L^p中有一个导数,p接近1。在这些条件下,存在唯一的混合问题的解的梯度在边界的L^p的非切极大函数。当p=1时,我们还使用Hardy空间的数据获得了结果。

英文摘要:

We consider the mixed boundary value problem or Zaremba's problem for the Laplacian in a bounded Lipschitz domain in R^n. We specify Dirichlet data on part of the boundary and Neumann data on the remainder of the boundary. We assume that the boundary between the sets where we specify Dirichlet and Neumann data is a Lipschitz surface. We require that the Neumann data is in L^p and the Dirichlet data is in the Sobolev space of functions having one derivative in L^p for some p near 1. Under these conditions, there is a unique solution to the mixed problem with the non-tangential maximal function of the gradient of the solution in L^p of the boundary. We also obtain results with data from Hardy spaces when p=1.

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