29 citations · 167 across the 26 of their papers we have counts for
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math.QA2009★ 12 cited
Twisting algebras using non-commutative torsors
Pierre Guillot, Christian Kassel, Akira Masuoka
Non-commutative torsors (equivalently, two-cocycles) for a Hopf algebra can be used to twist comodule algebras. After surveying and extending the literature on the subject, we prov…
math.QA2009★ 9 cited
Flatness and freeness properties of the generic Hopf Galois extensions
Christian Kassel, Akira Masuoka
In previous work, to each Hopf algebra H and each invertible right two-cocycle on H, Eli Aljadeff and the first-named author attached a subalgebra B of the free commutative Hopf al…
math.QA2009★ 23 cited
Cohomology of invariant Drinfeld twists on group algebras
Pierre Guillot, Christian Kassel
We show how to compute a certain group of equivalence classes of invariant Drinfeld twists on the algebra of a finite group G over a field k of characteristic zero. This group is n…