Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4590791 | Journal of Functional Analysis | 2011 | 37 Pages |
Abstract
We consider (self-adjoint) families of infinite matrices of noncommutative random variables such that the joint distribution of their entries is invariant under conjugation by a free quantum group. For the free orthogonal and hyperoctahedral groups, we obtain complete characterizations of the invariant families in terms of an operator-valued R-cyclicity condition. This is a surprising contrast with the Aldous–Hoover characterization of jointly exchangeable arrays.
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Physical Sciences and Engineering
Mathematics
Algebra and Number Theory