Séminaires : Séminaire d'Algèbres d'Opérateurs

Equipe(s) : ao,
Responsables :François Le Maître et Romain Tessera
Email des responsables :
Salle : 2015
Adresse :Sophie Germain
Description

Orateur(s) João Nuno Mestre - Max Planck Institute for Mathematics,
Titre Transverse measures and densities for Lie groupoids
Date16/05/2019
Horaire14:00 à 15:00
RésumeWe explain how extending Haefliger's approach to transverse measures for foliations to general Lie groupoids allows us to define and study measures and geometric measures (densities) on differentiable stacks.
The abstract theory works for any differentiable stack, but it becomes very concrete for those presented by proper Lie groupoids - for example, when computing the volume associated with a density, we recover the explicit formulas that are taken as definition by Weinstein.

This talk is based on joint work with Marius Crainic.
Salle2015
AdresseSophie Germain
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