Roberto Laface

collaborators

2 papers

math.AG2019

On ordinary Enriques surfaces in positive characteristic

Roberto Laface, Sofia Tirabassi

We give a notion of ordinary Enriques surfaces and their canonical lifts in any positive characteristic, and we prove Torelli-type results for this class of Enriques surfaces.

math.AG2018

On the Picard numbers of abelian varieties in positive characteristic

Roberto Laface

In this paper, we study the set $R_{g}^{(p)}$ of possible Picard numbers of abelian varieties of dimension $g$ over algebraically closed fields of characteristic $p > 0$ . We show that…