2 papers
math.OA2026
Decomposition theorems for unital graph C*-algebras
Guillaume Bellier, Tatiana Shulman
We prove that unital graph C*-algebras often admit a convenient decomposition into amalgamated free products. We use this to give a complete characterization of when a unital graph…
math.OA2026
The RFD property for graph -algebras
Guillaume Bellier
It is proved that the C*-algebra of a graph is residually finite dimensional (RFD) if and only if the graph has no infinite receiver, no cycle with an exit, no infinite ackward cha…