Paramétrix et propagation des singularités pour un problème de Cauchy à multiplicité variable
Perturbation index of linear partial differential-algebraic equations with a hyperbolic part
This paper deals with linear partial differential-algebraic equations (PDAEs) which have a hyperbolic part. If the spatial differential operator satisfies a Gårding-type inequality in a suitable function space setting, a perturbation index can be defined. Theoretical and practical examples are considered.
Problèmes mixtes pour des systèmes hyperboliques singuliers