Andruskiewitsch, Nicolás (ed.) et al., New trends in Hopf algebra theory. Proceedings of the colloquium on quantum groups and Hopf algebras, La Falda, Sierras de Córdoba, Argentina, August 9-13, 1999. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 267, 237-243 (2000).
A version of the well known Blattner-Montgomery duality theorem is given for the case of weak Hopf algebras (a weak bialgebra is, roughly speaking, a “bialgebra” in which the comultiplicativity of the unit and the multiplicativity of the counit are replaced by weaker properties). For the entire collection see [Zbl 0955.00038
|16W30||Hopf algebras (associative rings and algebras) (MSC2000)|
|16S40||Smash products of general Hopf actions|
|22A22||Topological groupoids (including differentiable and Lie groupoids)|