Optimizers in Sobolev-curl inequalities

Fuente: arXiv
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Hauptverfasser: Mederski, Jarosław, Szulkin, Andrzej
Format: Preprint
Veröffentlicht: 2025
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author Mederski, Jarosław
Szulkin, Andrzej
author_facet Mederski, Jarosław
Szulkin, Andrzej
contents We study a Sobolev-type inequality involving the $p$-curl operator in $\mathbb{R}^3$. We prove the existence of a minimizer which yields a solution to the $p$-curl-curl equation in the critical case. The problem is motivated both by nonlinear Maxwell equations and by the occurrence of zero modes in three-dimensional Dirac equations. Moreover, we introduce a new variational approach that allows to treat quasilinear strongly indefinite problems by direct minimization on a Nehari-type constraint. We also consider existence of minimizers under some symmetry assumptions. Finally, our approach offers a new proof of the compactness of minimizing sequences for the Sobolev inequalities in the critical case.
format Preprint
id arxiv_https___arxiv_org_abs_2511_01432
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Optimizers in Sobolev-curl inequalities
Mederski, Jarosław
Szulkin, Andrzej
Analysis of PDEs
Primary: 35Q60, Secondary: 35Q61, 35J20
We study a Sobolev-type inequality involving the $p$-curl operator in $\mathbb{R}^3$. We prove the existence of a minimizer which yields a solution to the $p$-curl-curl equation in the critical case. The problem is motivated both by nonlinear Maxwell equations and by the occurrence of zero modes in three-dimensional Dirac equations. Moreover, we introduce a new variational approach that allows to treat quasilinear strongly indefinite problems by direct minimization on a Nehari-type constraint. We also consider existence of minimizers under some symmetry assumptions. Finally, our approach offers a new proof of the compactness of minimizing sequences for the Sobolev inequalities in the critical case.
title Optimizers in Sobolev-curl inequalities
topic Analysis of PDEs
Primary: 35Q60, Secondary: 35Q61, 35J20
url https://arxiv.org/abs/2511.01432