The Brauer group is not a derived invariant
Algebraic Geometry
2018-06-18 v4
Abstract
In this short note we observe that the recent examples of derived-equivalent Calabi-Yau 3-folds with different fundamental groups also have different Brauer groups, using a little topological K-theory.
Cite
@article{arxiv.1306.6538,
title = {The Brauer group is not a derived invariant},
author = {Nicolas Addington},
journal= {arXiv preprint arXiv:1306.6538},
year = {2018}
}
Comments
6 pages. v4: weakened the main proposition slightly after finding errors in a reference, but the result in the title still holds