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arxiv: 1001.3590 · v3 · pith:HK3A2XECnew · submitted 2010-01-20 · 🧮 math.OA · math.FA

Completely bounded kernels

classification 🧮 math.OA math.FA
keywords completelykernelsboundedwhenalgebrasautomaticcontractivecountable
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We introduce completely bounded kernels taking values in L(A,B) where A and B are C*-algebras. We show that if B is injective such kernels have a Kolmogorov decomposition precisely when they can be scaled to be completely contractive, and that this is automatic when the index set is countable.

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