Maps preserving general means of positive operators

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8 Citations (Scopus)


Under some mild conditions, the general form of bijective transformations of the set of all positive linear operators on a Hilbert space which preserve a symmetric mean in the sense of Kubo-Ando theory is described.

Original languageEnglish
Pages (from-to)864-874
Number of pages11
JournalElectronic Journal of Linear Algebra
Publication statusPublished - Sep 29 2011



  • Automorphisms
  • Mean
  • Positive operators
  • Preservers

ASJC Scopus subject areas

  • Algebra and Number Theory

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