Characterising completely positive elementary operators

Martin Mathieu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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

Original languageEnglish
Pages (from-to)603-610
Number of pages8
JournalBulletin of the London Mathematical Society
Issue number6
Publication statusPublished - Nov 1998
Externally publishedYes

ASJC Scopus subject areas

  • General Mathematics


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