Gradient regularity for strongly singular or degenerate elliptic and parabolic equations

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1. Verfasser: Ambrosio, Pasquale
Format: Preprint
Veröffentlicht: 2025
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author Ambrosio, Pasquale
author_facet Ambrosio, Pasquale
contents We present recent advances in the regularity theory for weak solutions to some classes of elliptic and parabolic equations with strongly singular or degenerate structure. The equations under consideration satisfy standard $p$-growth and $p$-ellipticity conditions only outside a ball centered at the origin. In the elliptic setting, we describe Besov and Sobolev regularity results for suitable nonlinear functions of the gradient of the weak solutions, covering both the subquadratic ($1<p<2$) and superquadratic ($p\geq2$) regimes. Analogous results are obtained in the corresponding parabolic framework, where we address the higher spatial and temporal differentiability of the solutions under appropriate assumptions on the data.
format Preprint
id arxiv_https___arxiv_org_abs_2511_05692
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Gradient regularity for strongly singular or degenerate elliptic and parabolic equations
Ambrosio, Pasquale
Analysis of PDEs
35B45, 35B65, 35J70, 35J75, 35K65
We present recent advances in the regularity theory for weak solutions to some classes of elliptic and parabolic equations with strongly singular or degenerate structure. The equations under consideration satisfy standard $p$-growth and $p$-ellipticity conditions only outside a ball centered at the origin. In the elliptic setting, we describe Besov and Sobolev regularity results for suitable nonlinear functions of the gradient of the weak solutions, covering both the subquadratic ($1<p<2$) and superquadratic ($p\geq2$) regimes. Analogous results are obtained in the corresponding parabolic framework, where we address the higher spatial and temporal differentiability of the solutions under appropriate assumptions on the data.
title Gradient regularity for strongly singular or degenerate elliptic and parabolic equations
topic Analysis of PDEs
35B45, 35B65, 35J70, 35J75, 35K65
url https://arxiv.org/abs/2511.05692