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Complete diagrammatics of the single ring theorem (1704.07719v2)

Published 25 Apr 2017 in math-ph, math.CO, math.MP, math.OA, and nlin.CD

Abstract: Using diagrammatic techniques, we provide explicit functional relations between the cumulant generating functions for the biunitarily invariant ensembles in the limit of large size of matrices. The formalism allows to map two distinct areas of free random variables: Hermitian positive definite operators and non-normal R-diagonal operators. We also rederive the Haagerup-Larsen theorem and show how its recent extension to the eigenvector correlation function appears naturally within this approach.

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