Aller au contenu  Aller au menu  Aller à la recherche

Bienvenue - Laboratoire Jacques-Louis Lions

Print this page |

Un poste de lecturer IA est annoncé sur le site de SCAI

Chiffres-clé

Chiffres clefs

189 personnes travaillent au LJLL

86 permanents

80 chercheurs et enseignants-chercheurs permanents

6 ingénieurs, techniciens et personnels administratifs

103 personnels non permanents

74 doctorants

15 post-doc et ATER

14 émérites et collaborateurs bénévoles

 

Chiffres janvier 2022

 

GT CalVa HM NGUYEN

Lundi 12 juin 2017

Hoai-Minh Nguyen (EPFL, Lausanne)

On the discreteness of the interior transmission eigenvalues for acoustic waves

Abstract : Interior transmission eigenvalues for acoustic waves is an eigenvalue problem involving two scalar elliptic equations of two unknowns which have the same Neumann and Dirichlet boundary conditions. One of its interests comes from the connection with the density of the range of the far field operator in the scattering problem. The interior transmission eigenvalue problem is known to be not self-adjoint. More severely, a priori estimates are non-standard and do not hold in general in this context. In this talk, I will review know results on the discreteness of transmissions eigenvalues and discuss new ones (joint work with Q. H Nguyen).