A graph C*-algebra is residually finite dimensional if and only if the graph has no infinite receiver, no cycle with an exit, no infinite backward chain, and every vertex reaches a sink, cycle, or infinite emitter.
Groupoid models for theC ∗-algebras of topological higher-rank graphs.Journal of Operator Theory, pages 95–120
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The RFD property for graph $C^*$-algebras
A graph C*-algebra is residually finite dimensional if and only if the graph has no infinite receiver, no cycle with an exit, no infinite backward chain, and every vertex reaches a sink, cycle, or infinite emitter.