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Positive Linear Maps on C*-Algebras

Published online by Cambridge University Press:  20 November 2018

Man-Duen Choi*
Affiliation:
University of Toronto, Toronto, Ontario
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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