Talk page

Title:
The diagonal of quartic fivefolds

Speaker:
Stefan Schreieder

Abstract:
We show that a very general quartic fivefold over a field of characteristic different from 2 does not admit a decomposition of the diagonal, hence is not retract rational. This generalizes a result of Nicaise-Ottem, who showed stable irrationality over fields of characteristic zero. Joint work with Nebojsa Pavic.

Link:
http://scgp.stonybrook.edu/video_portal/video.php?id=5654

Workshop:
Simons- Workshop: Birational Complexity of Algebraic Varieties