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Abstract: We prove directly that if E is a directed graph in which every cycle has anentrance, then there exists a C*-algebra which is co-universal forToeplitz-Cuntz-Krieger E-families. In particular, our proof does not invokeideal-structure theory for graph algebras, nor does it involve use of the gaugeaction or its fixed point algebra.



Autor: Aidan Sims, Samuel B.G. Webster

Fuente: https://arxiv.org/







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