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• W2250042212 abstract "Let $mathcal{T}_{+}(E)$ be the tensor algebra of a $W^{*}$-correspondence $E$ over a $W^{*}$-algebra $M$. In earlier work, we showed that the completely contractive representations of $mathcal{T}_{+}(E)$, whose restrictions to $M$ are normal, are parametrized by certain discs or balls $overline{D(E,sigma)}$ indexed by the normal $*$-representations $sigma$ of $M$. Each disc has analytic structure, and each element $Fin mathcal{T}_{+}(E) $ gives rise to an operator-valued function $widehat{F}_{sigma}$ on $overline{D(E,sigma)}$ that is continuous and analytic on the interior. In this paper, we explore the effect of adding operator-valued weights to the theory. While the statements of many of the results in the weighted theory are anticipated by those in the unweighted setting, substantially different proofs are required. Interesting new connections with the theory of completely positive are developed. Our perspective has been inspired by work of Vladimir Muller in which he studied operators that can be modeled by parts of weighted shifts. Our results may be interpreted as providing a description of operator algebras that can be modeled by weighted tensor algebras. Our results also extend work of Gelu Popescu, who investigated similar questions." @default.
• W2250042212 created "2016-06-24" @default.
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• W2250042212 date "2015-07-08" @default.
• W2250042212 modified "2023-09-23" @default.
• W2250042212 title "Matricial Function Theory and Weighted Shifts" @default.
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• W2250042212 hasPublicationYear "2015" @default.
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