Harrison Cocycles and the Group of Galois Coobjects
Harrison Cocycles and the Group of Galois Coobjects
Séminaires et Congrès | 1997
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- Année : 1997
- Tome : 2
- Format : Papier
- Langue de l'ouvrage :
Anglais - Class. Math. : 16W30, 13B05
- Pages : 83-101
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.
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