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CHARACTERISING COMPLETELY POSITIVE ELEMENTARY OPERATORS

Published online by Cambridge University Press:  01 November 1998

MARTIN MATHIEU
MARTIN MATHIEU
Affiliation:
Department of Mathematics, National University of Ireland, Maynooth, Co. Kildare, Ireland
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Abstract

Let S be an elementary operator on a C*-algebra with minimal length [lscr ](S)[ges ]1. Then S is completely positive if and only if S is n-positive for some natural number n[ges ]([lscr ](S)−1)/2.

Type
Notes and Papers
Information
Bulletin of the London Mathematical Society , Volume 30 , Issue 6 , November 1998 , pp. 603 - 610
Copyright
© The London Mathematical Society 1998

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