08/07/2002, 09:00 — 10:00 — Amphitheatre Ea2, North Tower, IST
Ieke Moerdijk, Utrecht
Non-abelian Cohomology and Gerbes (I)
The purpose of these lectures is to introduce the audience to the topological concepts of stack, gerbe and bundle gerbe, and the non-abelian cohomology classes to which they give rise.
Sheaves, torsors and non-abelian cohomology in degree 1.
References
- L. Breen, On the classification of 2-gerbes and 2-stacks, Asterisque 225, (1994).
- J. Giraud, Cohomologie nonabelienne, Springer-Verlag, 1971.
- I. Moerdijk, On the classification of regular Lie groupoids, preprint math.DG/0203099.
- M. Murray, Bundle gerbes, J. London Math. Soc. 54 (1996).