2 papers
math.RA2005
Duality for finite Hopf algebras explained by corings
S. Caenepeel, D. Quinn, S. Raianu
We give a coring version for the duality theorem for actions and coactions of a finitely generated projective Hopf algebra. We also provide a coring analogue for a theorem of H.-J.…
math.RT2005
Local theory of almost split sequences for comodules
William Chin, Mark Kleiner, Declan Quinn
We show that almost split sequences in the category of comodules over a coalgebra with finite-dimensional right-hand term are direct limits of almost split sequences over finite di…