Topological Brauer group of Kummer-type varieties

Organisé par

Institut Henri Poincaré

The topological Brauer group of a smooth projective complex variety is by definition the torsion part of its third degree Betti cohomology. It is an important stale birational invariant, for example it has been used by Artin and Mumford to prove the existence of non-stably rational, unirational varieties. One can see it as the "purely topological" part of the Brauer group: for this reason, underst

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