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math.KT2009
Non-abelian Hopf Cohomology of Radford products
P. Nuss, M. Wambst
We study the non-abelian Hopf cohomology theory of Radford products with coefficients in a comodule algebra. We show that these sets can be expressed in terms of the non-abelian Ho…
math.KT2005
Non-Abelian Hopf Cohomology
Philippe Nuss, Marc Wambst
We introduce non-abelian cohomology sets of Hopf algebras with coefficients in Hopf modules. We prove that these sets generalize Serre's non-abelian group cohomology theory. Using…