 Séminaires et Congrès - 2 - pages 83-101 | |
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Algèbre non commutative, groupes quantiques et invariants Septième contact Franco-Belge, Reims, Juin 1995
J. Alev, G. Cauchon (Éd.)
Séminaires et Congrès 2 (1997), 304 pages
Harrison Cocycles and the Group of Galois Coobjects
S. CAENEPEEL
Séminaires et Congrès 2 (1997), 83-101
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Résumé :
Let H be a commutative faithfully flat Hopf algebra over a commutative ring R. We give an exact sequence describing the group of H-Galois coobjects. The other terms in the sequence are Harrison cohomology groups. This generalizes an exact sequence due to Early and Kreimer and Yokogawa.
Class. math. : 16W30, 13B05