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Characterizations of certain means of positive operators. (arXiv:1901.05504v1 [math.FA])

来源于:arXiv
In this paper we present some characterizations for quasi-arithmetic operator means (among them the arithmetic and harmonic means) on the positive definite cone of the full algebra of Hilbert space operators, and also for the Kubo-Ando geometric mean on the positive definite cone of a general non-commutative $C^*$-algebra. 查看全文>>