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math.QA2005
Radford's S^4 formula for co-Frobenius Hopf algebras
Margaret Beattie, Daniel Bulacu, Blas Torrecillas
This note extends Radford's formula for the fourth power of the antipode of a finite dimensional Hopf algebra to co-Frobenius Hopf algebras and studies equivalent conditions to a H…
math.QA2005
Generalized diagonal crossed products and smash products for quasi-Hopf algebras. Applications
Daniel Bulacu, Florin Panaite, Freddy Van Oystaeyen
In this paper we introduce generalizations of diagonal crossed products, two-sided crossed products and two-sided smash products, for a quasi-Hopf algebra H. The results we obtain…