–
Amphitheatre Ea2, North Tower, IST

Ieke Moerdijk, Utrecht

Non-abelian Cohomology and Gerbes IV

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.

Bundle gerbes and extensions of smooth groupoids.

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).