Séminaires : Séminaire d'Analyse et Géométrie

Equipe(s) :
Responsables :O. Biquard, A. Deruelle, E. Di Nezza, I. Itenberg, X. Ma
Email des responsables : {olivier.biquard, alix.deruelle, eleonora.dinezza, ilia.itenberg, xiaonan.ma}@imj-prg.fr
Salle : 15–25.502
Adresse :Jussieu

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Orateur(s) Peter Topping - University of Warwick,
Titre Ricci flows at time zero
Horaire14:00 à 15:00
RésumeMost Ricci flow theory takes the short-time existence of solutions as a starting point and ends up concerned with understanding the long-time limiting behaviour and the structure of any finite-time singularities that may develop along the way. In this talk I will look at what you can think of as singularities at time zero. I will describe some of the situations in which one would like to start a Ricci flow with a space that is rougher than a smooth Riemannian manifold, and some of the situations in which one considers smooth initial data that is only achieved in a non-smooth way. I will assume basic knowledge of Riemannian geometry, but will not be assuming expertise in Ricci flow theory.