Lipschitz conditions on bounded harmonic functions on the upper half-space

Fuente: arXiv
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Main Author: Markovic, Marijan
Format: Preprint
Published: 2025
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author Markovic, Marijan
author_facet Markovic, Marijan
contents This work is devoted to Lipschitz conditions on bounded harmonic functions on the upper half-space in $\mathbb {R}^n$. Among other results we prove the following one. Let $U(x',x_n)$ be a real-valued bounded harmonic function on the upper half-space $\mathbb {R}^n_+ = \{(x',x_n):x'\in \mathbb{R}^{n-1}, x_n\in (0,\infty)\}$, which is continuous on the closure of this domain. Assume that for $α\in (0,1)$ there exists a constant $C$ such that for every $x'\in \mathbb{R}^{n-1}$ we have $| |U|(x',x_n) - |U|(x',0)|\le Cx_n^α,\, x_n\in (0,\infty)$. Then there exists a constant $\tilde {C}$ such that $|U(x) - U (y)| \le \tilde{C} |x-y|^α,\, x,y\in \mathbb{R}^{n}_+$.
format Preprint
id arxiv_https___arxiv_org_abs_2501_15315
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Lipschitz conditions on bounded harmonic functions on the upper half-space
Markovic, Marijan
Complex Variables
This work is devoted to Lipschitz conditions on bounded harmonic functions on the upper half-space in $\mathbb {R}^n$. Among other results we prove the following one. Let $U(x',x_n)$ be a real-valued bounded harmonic function on the upper half-space $\mathbb {R}^n_+ = \{(x',x_n):x'\in \mathbb{R}^{n-1}, x_n\in (0,\infty)\}$, which is continuous on the closure of this domain. Assume that for $α\in (0,1)$ there exists a constant $C$ such that for every $x'\in \mathbb{R}^{n-1}$ we have $| |U|(x',x_n) - |U|(x',0)|\le Cx_n^α,\, x_n\in (0,\infty)$. Then there exists a constant $\tilde {C}$ such that $|U(x) - U (y)| \le \tilde{C} |x-y|^α,\, x,y\in \mathbb{R}^{n}_+$.
title Lipschitz conditions on bounded harmonic functions on the upper half-space
topic Complex Variables
url https://arxiv.org/abs/2501.15315