%0 Journal Article
%T Non-Abelian Hopf Cohomology
%A Philippe Nuss
%A Marc Wambst
%J Mathematics
%D 2005
%I arXiv
%X 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 descent techniques, we establish that our construction enables to classify as well twisted forms for modules over Hopf-Galois extensions as torsors over Hopf-modules.
%U http://arxiv.org/abs/math/0511712v2