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Hopf group-coalgebras

Alexis Virelizier

math.QAarXiv:math/0012073

Abstract

We study algebraic properties of Hopf group-coalgebras, recently introduced by Turaev. We show the existence of integrals and traces for such coalgebras, and we generalize the main properties of quasitriangular and ribbon Hopf algebras to the setting of Hopf group-coalgebras.

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