Séminaires : Séminaire d'Analyse Fonctionnelle

Equipe(s) : af,
Responsables :E. Abakoumov - A.Eskenazis - D. Cordero-Erausquin - M. Fathi - O. Guédon - B. Maurey
Email des responsables :
Salle : salle 13 - couloir 15-16 - 4ème étage
Adresse :Campus Pierre et Marie Curie
Le Jeudi à 10h30 -  IMJ-PRG - 4 place Jussieu - 75005 PARIS

Orateur(s) Wilson Cuellar - Sao Paulo,
Titre The ergodicity of a class of Banach spaces
Horaire14:00 à 15:00
RésumeThe notion of ergodic Banach space was introduced by V. Ferenczi and C. Rosendal (2005) to study the classification of the relative complexity of the isomorphism relation between the subspaces of a separable Banach space.

In this talk we study a criterion for ergodicity based on the Enflo's criterion for the construction of spaces without the approximation property, which allow us to prove that a non-ergodic Banach space must be near-Hilbert. This reinforces the Ferenczi-Rosendal conjecture that $\ell_2$ is the only non ergodic Banach space.
Sallesalle 13 - couloir 15-16 - 4ème étage
AdresseCampus Pierre et Marie Curie