A duality approach to gradient Hölder estimates for linear divergence form elliptic equations

Fuente: arXiv
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Autores principales: Saari, Olli, Sun, Yuanlin, Wang, Hua-Yang, Wei, Yuanhong
Formato: Preprint
Publicado: 2025
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author Saari, Olli
Sun, Yuanlin
Wang, Hua-Yang
Wei, Yuanhong
author_facet Saari, Olli
Sun, Yuanlin
Wang, Hua-Yang
Wei, Yuanhong
contents We prove a sparse bound in the context of Schauder theory for divergence form elliptic partial differential equations. In addition, we show how an iteration argument inspired by sparse domination bounds can be used to deduce gradient reverse Hölder inequalities for equations with non-constant coefficients from the theory for constant coefficient equations. We deal with coefficient matrices whose entries are either Hölder continuous or just uniformly continuous, leading to different results. The purpose of the approach is to highlight the connection between Schauder theory and duality of local Hardy spaces and local Hölder spaces.
format Preprint
id arxiv_https___arxiv_org_abs_2512_06979
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A duality approach to gradient Hölder estimates for linear divergence form elliptic equations
Saari, Olli
Sun, Yuanlin
Wang, Hua-Yang
Wei, Yuanhong
Analysis of PDEs
42B37
We prove a sparse bound in the context of Schauder theory for divergence form elliptic partial differential equations. In addition, we show how an iteration argument inspired by sparse domination bounds can be used to deduce gradient reverse Hölder inequalities for equations with non-constant coefficients from the theory for constant coefficient equations. We deal with coefficient matrices whose entries are either Hölder continuous or just uniformly continuous, leading to different results. The purpose of the approach is to highlight the connection between Schauder theory and duality of local Hardy spaces and local Hölder spaces.
title A duality approach to gradient Hölder estimates for linear divergence form elliptic equations
topic Analysis of PDEs
42B37
url https://arxiv.org/abs/2512.06979