Double Operator Integrals and Submajorization
School of Mathematics and Statistics, University of NSW,
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We present a user-friendly version of a double operator integration theory which still retains a capacity for many useful applications. Using recent results from the latter theory applied in noncommutative geometry, we derive applications to analogues of the classical Heinz inequality, a simplified proof of a famous inequality of Birman-Koplienko-Solomyak and also to the Connes-Moscovici inequality. Our methods are sufficiently strong to treat these inequalities in the setting of symmetric operator norms in general semifinite von Neumann algebras.
Mathematics Subject Classification: 46L51 / 46L52 / 47L20
Key words: double operator integration / unitarily invariant norm inequalities / noncommutative Lp-spaces
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