Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4616949 | Journal of Mathematical Analysis and Applications | 2013 | 10 Pages |
Abstract
We investigate the KK-theory of twisted higher-rank-graph algebras by adapting parts of Elliott’s computation of the KK-theory of the rotation algebras. We show that each 2-cocycle on a higher-rank graph taking values in an abelian group determines a continuous bundle of twisted higher-rank graph algebras over the dual group. We use this to show that for a circle-valued 2-cocycle on a higher-rank graph obtained by exponentiating a real-valued cocycle, the KK-theory of the twisted higher-rank graph algebra coincides with that of the untwisted one.
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Physical Sciences and Engineering
Mathematics
Analysis
Authors
Alex Kumjian, David Pask, Aidan Sims,