Non-torsion Brauer groups

Abstract: The classical definition of the Brauer group of a field can be extended in different ways to general schemes. I'll explain two methods of doing so in order to motivate the question: when is the cohomological Brauer group torsion? After reviewing some techniques for computing this group, I'll present new examples of normal surfaces in positive characteristic with non-torsion Brauer group. This talk is based on work from arxiv.org/abs/2102.01799.

algebraic geometry

Audience: researchers in the discipline

American Graduate Student Algebraic Geometry Seminar

Series comments: The American Graduate Student Algebraic Geometry Seminar (AGSAGS) is a virtual seminar by and for algebraic geometry graduate students.

The goal of this seminar is for graduate students to share their research through online talks and to provide an algebraic geometry graduate networking system. Grad students, postdocs, and professors are welcome to attend.

Seminars will be held on Mondays at 4 p.m. Eastern on Zoom. We hope this time is convenient for graduate students in the Americas, hence the name AGSAGS. Prior registration is required and interested participants should register here: sites.google.com/view/agsags/registration. In addition to graduate talks, there will be occasional social events.