Nontangential Maximal Function estimates for the elliptic Mixed Boundary Value Problem with variable coefficients

Fuente: arXiv
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Main Authors: Dong, Hongjie, Ulmer, Martin
Format: Preprint
Published: 2026
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author Dong, Hongjie
Ulmer, Martin
author_facet Dong, Hongjie
Ulmer, Martin
contents We consider an elliptic operator $L$ with variable, merely bounded, and measurable coefficients on a Lipschitz domain, and study solutions to $Lu=0$ that attain given Neumann and Dirichlet-regularity data on different parts of the boundary. The boundary data lies in $L^p$ or $W^{1,p}$ respectively, and we show nontangential maximal function estimates of the gradient of the solution. This mixed boundary value problem generalizes the pure Dirichlet, regularity, and Neumann problem with rough boundary data in $L^p$, and the already established mixed boundary value problem for the Laplacian.
format Preprint
id arxiv_https___arxiv_org_abs_2603_10973
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Nontangential Maximal Function estimates for the elliptic Mixed Boundary Value Problem with variable coefficients
Dong, Hongjie
Ulmer, Martin
Analysis of PDEs
35J15, 35J25
We consider an elliptic operator $L$ with variable, merely bounded, and measurable coefficients on a Lipschitz domain, and study solutions to $Lu=0$ that attain given Neumann and Dirichlet-regularity data on different parts of the boundary. The boundary data lies in $L^p$ or $W^{1,p}$ respectively, and we show nontangential maximal function estimates of the gradient of the solution. This mixed boundary value problem generalizes the pure Dirichlet, regularity, and Neumann problem with rough boundary data in $L^p$, and the already established mixed boundary value problem for the Laplacian.
title Nontangential Maximal Function estimates for the elliptic Mixed Boundary Value Problem with variable coefficients
topic Analysis of PDEs
35J15, 35J25
url https://arxiv.org/abs/2603.10973