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Paper IPM / M / 14520  


Abstract:  
Let Λ be a rowfinite higherrank graph with no sources. We identify a maximal commutative subalgebra M inside the KumjianPask algebra KP_{R}(Λ). We also prove a generalized CuntzKrieger uniqueness theorem for KumjianPask algebras which says that a representation of KP_{R}(Λ) is injective if and only if it is injective on M.
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