All Title Author
Keywords Abstract

Mathematics  1999 

Brauer groups and quotient stacks

Full-Text   Cite this paper   Add to My Lib

Abstract:

A natural question is to determine which algebraic stacks are qoutient stacks. In this paper we give some partial answers and relate it to the old question of whether, for a scheme X, the natural map from the Brauer goup (equivalence classes of Azumaya algebras) to the cohomological Brauer group (the torsion subgroup of $H^2(X,{\mathbb G}_m)$ is surjective.

Full-Text

comments powered by Disqus