Tensor products of operator systems

A. Kavruk, V.I. Paulsen, Ivan Todorov, M. Tomforde

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


The purpose of the present paper is to lay the foundations for a systematic study of tensor products of operator systems. After giving an axiomatic definition of tensor products in this category, we examine in detail several particular examples of tensor products, including a minimal, maximal, maximal commuting, maximal injective and some asymmetric tensor products. We characterize these tensor products in terms of their universal properties and give descriptions of their positive cones. We also characterize the corresponding tensor products of operator spaces induced by a certain canonical inclusion of an operator space into an operator system. We examine notions of nuclearity for our tensor products which, on the category of C*-algebras, reduce to the classical notion. We exhibit an operator system S which is not completely order isomorphic to a C*-algebra yet has the property that for every C*-algebra A, the minimal and maximal tensor product of S and A are equal.
Original languageEnglish
Pages (from-to)267-299
Number of pages33
JournalJournal of Functional Analysis
Issue number2
Publication statusPublished - 15 Jul 2011

ASJC Scopus subject areas

  • Analysis


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