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math.OA2005★ 83 cited
Ergodic coactions with large multiplicity and monoidal equivalence of quantum groups
Julien Bichon, An De Rijdt, Stefaan Vaes
We construct new examples of ergodic coactions of compact quantum groups, in which the multiplicity of an irreducible corepresentation can be strictly larger than the dimension of…
math.QA2005
Free product formulae for quantum permutation groups
Teodor Banica, Julien Bichon
Associated to a finite graph is its quantum automorphism group . We prove a formula of type , where is a free wreath product. Then we discuss re…