Séminaire Analyse-Probabilités

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Intervenant : GRASSELLI Viviana (IECL - Metz)
Titre :
Speed of propagation for the boson star equation

Le : 27/01/2026 de : 10:30 à : 11:30
We will consider a non linear equation describing a large group of gravitating bosons that form a boson star. After briefly discussing the well-posedness of the equation, we will study some dispersive properties of the solution, in particular how fast it propagates and its maximal and minimal velocities of propagation. These results are a joint work with Sébastien Breteaux and Jérémy Faupin.
Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : VAN DEN BOSCH Hanne (Universidad de Chile)
Titre :
The Yamabe problem for manifolds with boundary and its quantitative stability.

Le : 17/02/2026 de : 10:30 à : 11:30
The classical Yamabe problem seeks for a metric conformal to a given metric with constant scalar curvature. By rewriting the conformal factor in a suitable way, it is equivalent to minimizing the L² norm of the gradient under a constraint on the L^2^* - norm. This talk concerns an analogous variational problem for manifolds with boundary introduced by Escobar, which seeks for metrics with zero scalar curvature in the interior and constant mean curvature on the boundary. The variational formulation for functions is very similar, but the constraint is now on the boundary values of the function. I will introduce the problem and show how a compactness argument of Engelstein-Neumayer-Spolaor can be adapted to give quantitative stability for minimizers of this problem.
Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : GIRALT Mar (Observatoire de Paris )
Titre :


Le : 17/03/2026 de : 10:30 à : 11:30

Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : SUN Changzhen (CNRS & Laboratoire de Mathématiques de Besançon)
Titre :


Le : 14/04/2026 de : 10:30 à : 11:30

Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : AYI Nathalie (LJLL)
Titre :
TBA

Le : 19/05/2026 de : 10:30 à : 11:30
TBA
Salle : A711