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- Gabriel Nagy, Sarah Reznikoff
- J. London Math. Society
- 2012

We introduce a certain natural abelian C*-subalgebra of a graph C*-algebra, which has functorial properties that can be used for characterizing injectivity of representations of the ambient C*-algebra. In particular, a short proof of the Cuntz-Krieger Uniqueness Theorem, for graphs that may have loops without entries, is given. Graph C*-algebras are… (More)

A (1,≤ 2)-identifying code is a subset of the vertex set C of a graph such that each pair of vertices intersects C in a distinct way. This has useful applications in locating errors in multiprocessor networks and threat monitoring. At the time of writing, there is no simply-stated rule that will indicate if a graph is (1,≤ 2)-identifiable. As such, we… (More)

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