Frobenius liftability of projective varieties -- Jakub Witaszek, November 2, 2018

Since the proof of Kodaira vanishing by Deligne and Illusie, the lifts of the Frobenius morphism played an important role in positive characteristic and arithmetic geometry. In this talk, I will discuss new results on the characterisation of projective varieties admitting a global lifting of Frobenius. Furthermore, I will provide applications of the theory to varieties with trivial logarithmic cotangent bundle, and to Remmert-and-Van-de-Ven type problems. This is based on a joint project with Piotr Achinger and Maciej Zdanowicz.