Mathematics – Differential Geometry
Scientific paper
2008-03-26
Forum Math. 23 (3) 565-610, 2011
Mathematics
Differential Geometry
40 pages; v3: completely revised and extended, classification corrected, name changed, to appear in Forum Math
Scientific paper
10.1515/FORM.2011.020
In this paper we introduce principal 2-bundles and show how they are classified by non-abelian Cech cohomology. Moreover, we show that their gauge 2-groups can be described by 2-group-valued functors, much like in classical bundle theory. Using this, we show that, under some mild requirements, these gauge 2-groups possess a natural smooth structure. In the last section we provide some explicit examples.
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