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math.OA2014
Graph products of operator algebras
Martijn Caspers, Pierre Fima
Graph products for groups were defined by Green in her thesis as a generalization of both Cartesian and free products. In this paper we define the corresponding graph product for r…
math.OA2014
A cocycle in the adjoint representation of the orthogonal free quantum groups
Pierre Fima, Roland Vergnioux
We show that the orthogonal free quantum groups are not inner amenable and we construct an explicit proper cocycle weakly contained in the regular representation. This strengthens…