Contractible subgraphs and Morita equivalence of graph C*-algebras
classification
🧮 math.OA
keywords
graphdirectedgraphsmoritaalgebraalgebrasconstructionscontractible
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In this paper we describe an operation on directed graphs which produces a graph with fewer vertices, such that the C*-algebra of the new graph is Morita equivalent to that of the original graph. We unify and generalize several related constructions, notably delays and desingularizations of directed graphs.
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