Article Dans Une Revue Comptes Rendus. Mathématique Année : 2025

Log-concavity and anti-maximum principles for semilinear and linear elliptic equations

Résumé

This paper is concerned with existence and qualitative properties of positive solutions of semilinear elliptic equations in bounded domains with Dirichlet boundary conditions. We show the existence of positive solutions in the vicinity of the linear equation and the log-concavity of the solutions when the domain is strictly convex. We also review the standard results on the log-concavity or the more general quasi-concavity of solutions of elliptic equations. The existence and other convergence results especially rely on the maximum principle, on a quantified version of the anti-maximum principle, on the Schauder fixed point theorem, and on some a priori estimates.

Fichier principal
Vignette du fichier
hn.pdf (374.24 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05128233 , version 1 (24-06-2025)
hal-05128233 , version 2 (24-11-2025)

Licence

Identifiants

  • HAL Id : hal-05128233 , version 2

Citer

François Hamel, Nikolai Nadirashvili. Log-concavity and anti-maximum principles for semilinear and linear elliptic equations. Comptes Rendus. Mathématique, 2025. ⟨hal-05128233v2⟩
660 Consultations
354 Téléchargements

Partager

  • More