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20022009
most citedSelf-similar fragmentations derived from the stable tree II: splitting at nodes

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math.QA2003★ 32 cited

Double categories and quantum groupoids

Nicolas Andruskiewitsch, Sonia Natale

We give the construction of a class of weak Hopf algebras (or quantum groupoids) associated to a matched pair of groupoids and certain cocycle data. This generalizes a now well-kno…