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On strong shift
equivalence for row-finite graphs and C*-algebras
Kevin Aguyar Brix and Pete Gautam |
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Vol. 17 (2024), No. 2, 293–309
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Abstract |
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We extend and strengthen a theorem of Bates that says that row-finite graphs that are strong shift equivalent have Morita equivalent graph C*-algebras. This allows us to ask whether our stronger notion of Morita equivalence does in fact characterise strong shift equivalence. We believe this will be relevant for future research on infinite graphs and their C*-algebras. We also study in-splits and out-splits as particular examples of strong shift equivalences and show that the induced Morita equivalences respect a whole family of weighted gauge actions. We then ask whether strong shift equivalence is generated by (generalised) in-splits and out-splits. |
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Keywords
strong shift equivalence, graphs, C*-algebras
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Mathematical Subject Classification
Primary: 37A55
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Milestones
Received: 11 December 2022
Accepted: 2 March 2023
Published: 20 May 2024
Communicated by David Royal Larson
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Authors |
| Kevin Aguyar Brix | |
| Centre for Mathematical
Sciences Lund University Lund Sweden |
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| Pete Gautam | |
| School of Mathematics Birmingham University Birmingham United Kingdom |
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| © 2024 The Author(s), under exclusive license to MSP (Mathematical Sciences Publishers). |
