2 papers
math.AG2019
Automorphisms of categories of schemes
Remy van Dobben de Bruyn
Given two schemes and , we prove that every equivalence between and comes from a unique isomorphism between and . This eliminat…
math.AG2019
A variety that cannot be dominated by one that lifts
Remy van Dobben de Bruyn
We prove a precise version of a theorem of Siu and Beauville on morphisms to higher genus curves, and use it to show that if a variety in characteristic lifts to characteri…