On the Cauchy problem for microlocally symmetrizable hyperbolic systems with log-Lipschitz coefficients - Institut Camille Jordan Accéder directement au contenu
Article Dans Une Revue Indiana University Mathematics Journal Année : 2020

On the Cauchy problem for microlocally symmetrizable hyperbolic systems with log-Lipschitz coefficients

Résumé

The present paper concerns the well-posedness of the Cauchy problem for microlocally symmetrizable hyperbolic systems whose coefficients and symmetrizer are log-Lipschitz continuous, uniformly in time and space variables. For the global in space problem we establish energy estimates with finite loss of derivatives, which is linearly increasing in time. This implies well-posedness in H ∞ , if the coefficients enjoy enough smoothness in x. From this result, by standard arguments (i.e. extension and convexification) we deduce also local existence and uniqueness. A huge part of the analysis is devoted to give an appropriate sense to the Cauchy problem, which is not evident a priori in our setting, due to the very low regularity of coefficients and solutions. 2010 Mathematics Subject Classification: 35L45 (primary); 35B45, 35B65 (secondary).
Fichier principal
Vignette du fichier
C-DS-F-M_LL-system.pdf (729.48 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01380371 , version 1 (12-10-2016)

Identifiants

Citer

Ferruccio Colombini, Daniele Del Santo, Francesco Fanelli, Guy Métivier. On the Cauchy problem for microlocally symmetrizable hyperbolic systems with log-Lipschitz coefficients. Indiana University Mathematics Journal, 2020, 69 (3), ⟨10.1512/iumj.2020.69.7963⟩. ⟨hal-01380371⟩
350 Consultations
106 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More