Eugenia Ferrari, UiB: Birational invariants characterising abelian varieties.
Abstract: At the beginning of the XX century Enriques proved that a
smooth complex surface with first and fourth plurigenus equal to 1 and
irregularity equal to 2 is birationally equivalent to an abelian
surface. In this talk I will sketch out how Enriques’ theorem has been
extended to higher dimension and to positive characteristic. In
particular, I will discuss a first result I obtained as part of my PhD
project: a version of Enriques’ theorem for surfaces in characteristic
p.