Spectral versus classical Nevanlinna-Pick interpolation in dimension two.
The purpose of this paper is to develop, in the context of operators of class C, a theory of Fredholm complexes analogous to that in [6], including an index stability result under perturbations. As a by-product, a simple proof of the additivity of the index for C-Fredholm operators will be given.
We determine the distributional behavior of products of free (in the sense of Voiculescu) identically distributed random variables. Analogies and differences with the classical theory of independent random variables are then discussed.
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