83 citations
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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…
math.RT2003★ 5 cited
Quivers of type A, flag varieties and representation theory
Olivier Schiffmann
A short informal survey on the topics listed in the title. For the proceedings of the International Conference on Rings and Algebras X.