Integration on locally compact noncommutative spaces

Details Integration on locally compact noncommutative spaces Integration on locally compact noncommutative spaces

2009-12-15

arxiv.org/abs/0912.2817v1

Mathematics

Operator Algebras

36 pages

Scientific paper

We present an ab initio approach to integration theory for nonunital spectral triples. This is done without reference to local units and in the full generality of semifinite noncommutative geometry. The main result is an equality between the Dixmier trace and generalised residue of the zeta function and heat kernel of suitable operators. We also examine definitions for integrable bounded elements of a spectral triple based on zeta function, heat kernel and Dixmier trace techniques. We show that zeta functions and heat kernels yield equivalent notions of integrability, which imply Dixmier traceability.

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