Jensen’s operator inequality for functions of two variables

Hansen, Frank

doi:10.1090/S0002-9939-97-04003-3

Jensen’s operator inequality for functions of two variables
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Proc. Amer. Math. Soc. 125 (1997), 2093-2102 Request permission

Abstract:

The operator convex functions of two variables are characterized in terms of a non-commutative generalization of Jensen’s inequality.

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