par Saracco, Paolo
Référence Journal of Algebra and its Applications
Publication A Paraître, 2020-03-23
Article révisé par les pairs
Résumé : We prove that a quasi-bialgebra admits a preantipode if and only if the associated free quasi-Hopf bimodule functor is Frobenius, if and only if the related (opmonoidal) monad is a Hopf monad. The same results hold in particular for a bialgebra, tightening the connection between Hopf and Frobenius properties.

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