A pairing between super Lie-Rinehart and periodic cyclic homology

Details A pairing between super Lie-Rinehart and periodic cyclic homology A pairing between super Lie-Rinehart and periodic cyclic homology

2005-12-01

arxiv.org/abs/math/0512040v1

Mathematics

K-Theory and Homology

11 pages

Scientific paper

10.1007/s00220-005-1479-2

We consider a pairing producing various cyclic Hochschild cocycles, which led Alain Connes to cyclic cohomology. We are interested in geometrical meaning and homological properties of this pairing. We define a non-trivial pairing between the homology of a Lie-Rinehart (super-)algebra with coefficients in some partial traces and relative periodic cyclic homology. This pairing generalizes the index formula for summable Fredholm modules, the Connes-Kubo formula for the Hall conductivity and the formula computing the K0-group of a smooth noncommutative torus. It also produces new homological invariants of proper maps contracting each orbit contained in a closed invariant subset in a manifold acted on smoothly by a connected Lie group. Finally we compare it with the characteristic map for the Hopf-cyclic cohomology.

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