On rational varieties of small degree

Abstract

We prove a stronger version of a criterion of rationality given by Ionescu and Russo. We use this stronger version to define an invariant for rational varieties (we call it rationality degree), and we classify rational varieties for small values of the invariant.

14 pages

Cited by in corpus (1)

• Hilbert schemes of lines and conics and automorphism groups of Fano threefolds