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Cuntz-Pimnser algebras, completely positive maps and Morita equivalence
Authors:Alberto E Marrero  Paul S Muhly
Institution:Department of Mathematics, University of Iowa, Iowa City, Iowa 52242 ; Department of Mathematics, University of Iowa, Iowa City, Iowa 52242
Abstract:Let $P$ be a completely positive map on $M_n(\mathbb{C} )$ and let $E_P$ be the associated GNS-$C^*$-correspondence. We prove a result that implies, in particular, that the Cuntz-Pimsner algebra of $E_P$, $\mathcal{O}(E_P)$, is strongly Morita equivalent to the Cuntz algebra $\mathcal{O}_{d(P)}$, where $d(P)$ is the index of $P$.

Keywords:Cuntz-Pimsner algebras  completely positive maps  Morita equivalence
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