The purely magnetic ansatz yields a family of spherically symmetric solutions to the SU(2) Yang-Mills equations parametrized by a single scalar function $W$. The equation on $W$ is a semilinear wave equation …

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A dynamical rare event is considered, e.g. using a Stochastic Differential Equation with small noise conditioned to hit set B before an attractor set A. Such rare events can be sampled using a population Monte Carlo …

Dans cet exposé, nous présentons deux types de problèmes inverses : un problème d'identification de paramètres en tomographie optique diffuse appliqué à l'imagerie cérébrale, ainsi qu'un problème de localisation de …

Recently, one-dimensional Poincaré inequalities have been applied in Global Sensitivity Analysis (GSA) to provide upper bounds and chaos-type approximations of Sobol indices. As a new contribution, we have developed …

Lien direct Microsoft Teams Numéro de réunion : 320 207 694 971 29 Code secret : XW9pq34H Composition du jury M. Rémi FLAMARY, Rapporteur, École Polytechnique M. Jean-Francois AUJOL, Rapporteur, Universite Bordeaux …

Imaginez demander à un ami d'effectuer un calcul complexe : comment savoir s'il ne s'est pas trompé ? C'est le même défi avec les calculs qu'on délègue aux serveurs informatiques. Le calcul vérifiable, domaine à la …

Abelian surfaces are complex tori whose enumerative invariants seem to satisfy remarkable regularity properties. The computation of their reduced Gromov-Witten invariants has already achieved in the case of …

In this talk we introducethe semi-discrete optimal transport (OT) problem with entropic regularization. We characterize the solution using a governing, well-posed ordinary differential equation (ODE). This naturally …

Random maps are among the most studied models of random geometry over the last fifteen years. Here, we will focus on the local behaviour of large random triangulations. We will begin with an accessible introduction …