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math.QA2008
Generic Hopf Galois extensions
Christian Kassel
In previous joint work with Eli Aljadeff we attached a generic Hopf Galois extension A(H,c) to each twisted algebra H(c) obtained from a Hopf algebra H by twisting its product with…
math.QA2008★ 11 cited
The lazy homology of a Hopf algebra
Julien Bichon, Christian Kassel
To any Hopf algebra H we associate two commutative Hopf algebras, which we call the first and second lazy homology Hopf algebras of H. These algebras are related to the lazy cohomo…