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math.OA2013★ 2 cited
Unitary cocycles and processes on the full Fock space
Stefan Voß
We consider a unitary cocycle or Schürmann triple on the non-commutative unitary group fixed by a complex matrix which induces an additive free white noise or an additive free Lévy…
math.OA2012
Schoenberg Correspondence on Dual Groups
Michael Schürmann, Stefan Voß
As in the classical case of Lévy processes on a group, Lévy processes on a Voiculescu dual group are constructed from conditionally positive functionals. It is essential for this c…