Brauer–Manin obstructions requiring arbitrarily many Brauer classes

Author:

Berg Jennifer1,Pagano Carlo2,Poonen Bjorn3,Stoll Michael4,Triantafillou Nicholas5,Viray Bianca6,Vogt Isabel7

Affiliation:

1. Department of Mathematics Bucknell University Lewisburg Pennsylvania USA

2. Department of Mathematics and Statistics Concordia University Montreal Quebec Canada

3. Department of Mathematics Massachusetts Institute of Technology Cambridge Massachusetts USA

4. Mathematisches Institut Universität Bayreuth Bayreuth Germany

5. Center for Communications Research Princeton New Jersey USA

6. Department of Mathematics University of Washington Seattle Washington USA

7. Department of Mathematics Brown University Providence Rhode Island USA

Abstract

AbstractOn a projective variety defined over a global field, any Brauer–Manin obstruction to the existence of rational points is captured by a finite subgroup of the Brauer group. We show that this subgroup can require arbitrarily many generators.

Funder

National Science Foundation

Simons Foundation

Deutsche Forschungsgemeinschaft

American Mathematical Society

Publisher

Wiley

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