John Christian Ottem (UiO): Irrationality of the generic quartic fivefold

Abstract: I will explain how tropical degenerations and motivic integration techniques can be used in rationality problems. In particular, I will show that generic quartic fivefolds, as well as many other complete intersections in projective space, are stably irrational. This is joint work with Johannes Nicaise.

Published Apr. 4, 2020 8:54 PM - Last modified Apr. 7, 2020 12:11 AM