JORNADAS DE GEOMETRÍA EN CONCEPCIÓN 2024

(Universidad de Concepción - Universidad de La Frontera)
Del 28 al 29 de Octubre/2024

 

Enriques varieties

Alessandra Sarti
Université de Poitiers
Abstract
Enriques surfaces are special free quotients of \(K3\) surfaces, i.e. these are the quotients of a \(K3\) surface by a fixed point free involution. In higher dimension the notion can be generalized and one can introduce Enriques manifolds and construct exemples as quotients of irreducible holomorphic symplectic manifolds and Calabi-Yau manifolds.
The definition of Enriques manifolds I will give is slightly different from the original definition given independetly by Oguiso, Schroer and by Boissière, Nieper-Wisskirchen and myself in 2011.
A reason is that one wants to extend the definition to singular Enriques varieties, trying to generalize the notion of Log Enriques surfaces.
In the talk I will discuss the definition, give several exemples and then go to the singular setting.