Equivariant class group. II. Enriched descent theorem
classification
🧮 math.AC
math.AG
keywords
bundlefiberprincipalclassdescentenrichedequivariantgroup
read the original abstract
We prove a version of Grothendieck's descent theorem on an `enriched' principal fiber bundle, a principal fiber bundle with an action of a larger group scheme. Using this, we prove the isomorphisms of the equivariant Picard and the class groups arising from such a principal fiber bundle.
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