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math.DG2003
A cohomological description of Abelian bundles and gerbes
Roger Picken
We describe the geometrical ladder of equations for Abelian bundles and gerbes, as well as higher generalisations, in terms of the cohomology of an operator that combines de Rham a…
math.DG2001
2-Categories, 4d state-sum models and gerbes
Marco Mackaay, Roger Picken
In this paper we give a short introduction to our results on the holonomy of gerbe-connections and explain our motivation coming from state-sum models.