Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4588053 | Journal of Algebra | 2008 | 25 Pages |
Abstract
We introduce and study non-abelian cohomology sets of Hopf algebras with coefficients in Hopf comodule algebras. We prove that these sets generalize as well Serre's non-abelian group cohomology theory as the cohomological theory constructed by the authors in a previous article. We establish their functoriality and compute explicit examples. Further we classify Hopf torsors.
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