15/02/2007, 11:00 — 12:00 — Sala P4.35, Pavilhão de Matemática
Olivier Brahic, CAMGSD
Introduction to the classification of regular groupoids
We will explain how Moerdijk tackles this problem in his paper Lie Groupoids, Gerbes and Non-Abelian Cohomology. We will introduce the notion of bitorsors and the way they are involved.