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ABSTRACT
We show that various cyclic and cocyclic modules attached to Hopf algebras and Hopf modules are related to each other via Connes’ duality isomorphism for the cyclic category.
ACKNOWLEDGMENTS
We would like to thank Nigel Higson for valuable discussions on the subject of this paper. Our thanks go also to our collaborators in Hajac et al. (Citation2004), Piotr M. Hajac and Yorck Sommerh[addot]user.
Notes
#Communicated by C. Cibils.