Mathematics – Differential Geometry
Scientific paper
2000-09-22
Mathematics
Differential Geometry
14 pages, amslatex. This is an expanded version of lecture given by the auther at the National Research Symposiumon Geometric
Scientific paper
The notion of a quaternionic gerbe is presented as a new way of bundling algebraic structures over a four manifold. The structure groupoid of this fibration is described in some detail. The Euclidean conformal group R*SO(4) appears naturally as a (non-commutative) monoidal structure on this groupoid. Using this monoidal structure we indicate the existence of a canonical quaternionic gerbe associated to a conformal structure on a four manifold.
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