Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-22T03:34:34.331Z Has data issue: false hasContentIssue false

Positive Linear Maps on C*-Algebras

Published online by Cambridge University Press:  20 November 2018

Man-Duen Choi*
Affiliation:
University of Toronto, Toronto, Ontario
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The objective of this paper is to give some concrete distinctions between positive linear maps and completely positive linear maps on C*-algebras of operators.

Herein, C*-algebras possess an identity and are written in German type . Capital letters A, B, C stand for operators, script letters for vector spaces, small letters x, y, z for vectors. Capital Greek letters Φ, Ψ stand for linear maps on C*-algebras, small Greek letters α, β, γ for complex numbers.

We denote by the collection of all n × n complex matrices. () = is the C*-algebra of n × n matrices over .

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1972

References

1. Arveson, W. B., Subalgebras of C*-algebras, Acta Math. 123 (1969), 141224.Google Scholar
2. Berberian, S. K., Approximate proper vectors, Proc. Amer. Math. Soc. 13 (1962), 111114.Google Scholar
3. Halmos, P. R., A Hilbert space problem book (Van Nostrand, Princeton, N.J., 1967).Google Scholar
4. Stinespring, W. F., Positive functions on C*-algebras, Proc. Amer. Math. Soc. 6 (1955), 211216.Google Scholar
5. Stormer, E., Positive linear maps of operator algebras, Acta Math. 110 (1963), 233278.Google Scholar