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math.OA2001
Operator-valued distributions: I. Characterizations of freeness
Alexandru Nica, Dimitri Shlyakhtenko, Roland Speicher
Let be a -probability space. Assume that itself is a -probability space; then can be viewed as -probability space as well. Let be in . We look at the qu…
math.OA2001
Free Calculus
Roland Speicher
I give a survey about my work on combinatorial and probabilistic aspects of free probability theory. In particular, I present the combinatorial description of freeness in terms of…
math.OA2001
R-cyclic families of matrices in free probability
Alexandru Nica, Dimitri Shlyakhtenko, Roland Speicher
We introduce the concept of ``R-cyclic family'' of matrices with entries in a non-commutative probability space; the definition consists in asking that only the ``cyclic'' non-cros…