Time: 14:00-15:45, 27/02/2026 (Friday)

Venue: Room 612, A6, Institute of Mathematics-VAST

Online (Join Zoom Meeting) link: https://zoom.us/j/99636681387?pwd=0WscBnehOJig68SqctGluVuA3RwraE.1

Abstract: In [Gr68, part III] Grothendieck discussed the Brauer group in lower dimension cases as well as the purity. This talk reviews the Brauer group and the Grothendieck purity conjecture.

References:

1. [Ce19] Česnavičius. Purity for the Brauer group, Duke Mathematical Journal Vol. 168, No. 8, 2019
2. [Gro68] Grothendieck, “Le groupe de Brauer, I-III: Exemples et compléments” in Dix exposés sur la cohomologie des schémas, Adv. Stud. Pure Math. 3, North-Holland, Amsterdam, 1968, 88–188.