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Contractible subgraphs and Morita equivalence of graph C*-algebras

Research paper by Tyrone Crisp, Daniel Gow

Indexed on: 29 Apr '04Published on: 29 Apr '04Published in: Mathematics - Operator Algebras



Abstract

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.