A residue formula for the fundamental Hochschild 3-cocycle for SUq(2)

Details A residue formula for the fundamental Hochschild 3-cocycle for SUq(2) A residue formula for the fundamental Hochschild 3-cocycle for SUq(2)

2011-05-26

arxiv.org/abs/1105.5366v1

Mathematics

Operator Algebras

26 pages

Scientific paper

An analogue of a spectral triple over SUq(2) is constructed for which the usual assumption of bounded commutators with the Dirac operator fails. An analytic expression analogous to that for the Hochschild class of the Chern character for spectral triples yields a non-trivial twisted Hochschild 3-cocycle. The problems arising from the unbounded commutators are overcome by defining a residue functional using projections to cut down the Hilbert space.

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