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Unicité forte à l’infini pour KdV

Luc Robbiano — 2002

ESAIM: Control, Optimisation and Calculus of Variations

Dans ce papier nous prouvons que si une solution de KdV est suffisamment décroissante à l’infini (c’est-à-dire comme e - x α α > 9 / 4 ) et si la donnée de Cauchy est nulle pour x assez grand alors la solution est nulle. Ce résultat est la conséquence d’une inégalité de Carleman adaptée à la décroissance de la solution à l’infini.

Unicité forte à l'infini pour KdV

Luc Robbiano — 2010

ESAIM: Control, Optimisation and Calculus of Variations

Dans ce papier nous prouvons que si une solution de KdV est suffisamment décroissante à l'infini (c'est-à-dire comme e - x α α > 9 / 4 ) et si la donnée de Cauchy est nulle pour assez grand alors la solution est nulle. Ce résultat est la conséquence d'une inégalité de Carleman adaptée à la décroissance de la solution à l'infini.

Controllability of a parabolic system with a diffusive interface

Jérôme Le RousseauMatthieu LéautaudLuc Robbiano

Séminaire Laurent Schwartz — EDP et applications

We consider a linear parabolic transmission problem across an interface of codimension one in a bounded domain or on a Riemannian manifold, where the transmission conditions involve an additional parabolic operator on the interface. This system is an idealization of a three-layer model in which the central layer has a small thickness δ . We prove a Carleman estimate in the neighborhood of the interface for an associated elliptic operator by means of partial estimates in several microlocal regions....

Controllability of a parabolic system with a diffuse interface

Jérôme Le RousseauMatthieu LéautaudLuc Robbiano — 2013

Journal of the European Mathematical Society

We consider a linear parabolic transmission problem across an interface of codimension one in a bounded domain or on a Riemannian manifold, where the transmission conditions involve an additional parabolic operator on the interface. This system is an idealization of a three-layer model in which the central layer has a small thickness δ . We prove a Carleman estimate in the neighborhood of the interface for an associated elliptic operator by means of partial estimates in several microlocal regions....

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