A note on the Zariski Lemma for hopf algebras

Gaetana Restuccia, Rosanna Utano

Abstract


The formulation of the lemma of Zariski is given for coactions of a class of Hopf algebras of the additive group on algebras. Known formulations and consequences of the lemma of Zariski for derivations and differentiations are revised.

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DOI: http://dx.doi.org/10.1478/C1A0401006