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Speaker: Roland Vergnioux, U. Caen
Title: Cocycles on free quantum groups
Abstract: After some generalities about 1-cocycles on discrete quantum groups, I will recall why cocycles in the regular representation of the orthogonal free quantum groups are trivial (an old result), and how to construct a non-trivial cocycle in a representation weakly contained in the regular one (more recent joint work with Pierre Fima).
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