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arxiv: 1901.05504 · v1 · pith:NJQ4JX7Hnew · submitted 2019-01-16 · 🧮 math.FA

Characterizations of certain means of positive operators

classification 🧮 math.FA
keywords meanspositivealgebracharacterizationsconedefiniteoperatorsarithmetic
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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.

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