Contractible subgraphs and Morita equivalence of graph C*-algebras

Details Contractible subgraphs and Morita equivalence of graph C*-algebras Contractible subgraphs and Morita equivalence of graph C*-algebras

2004-04-29

arxiv.org/abs/math/0404542v1

Mathematics

Operator Algebras

10 pages, uses XY-pic v3.7

Scientific paper

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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