Projective models of Enriques surfaces and Enriques sextics
Data: 17 MARZO 2026 dalle 11:15 alle 13:00
Luogo: aula Seminario VIII piano, ore 11:15
In 1896 Enriques constructed an example of a smooth non-rational surface with irregularity and geometric genus 0. It arises as the minimal desingularization of an "Enriques sextic", i.e. a sextic surface that is non-normal along the edges of a tetrahedron. In modern terminology, these are examples of Enriques surfaces, and it was already known to the Italian geometers that the general Enriques surface arises from this construction. I will talk about a joint work with G. Martin and D. Veniani, in which we show that in fact every Enriques surface arises as the minimal desingularization of an Enriques sextic.