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Add to My Calendar

Responsabili:

Federica Galluzzi  ed  Elena Martinengo
 

Nel calendario si indicano i seminari di geometria algebrica e altre attività di interesse, organizzate dall'Università e dal Politecnico di Torino.

Evento

Titolo: On the Lüroth problem over non-closed fields
Quando: 06/03/2019 - 15:00
Dove: Palazzo Campana - TORINO
Aula: Aula S
Relatore: Olivier Benoist
Afferenza: École normale supérieure
Locandina: Locandina

Descrizione:

 Abstract: The Lüroth problem asks whether every unirational variety is rational. Over the complex numbers, it has a positive answer for curves and surfaces, but fails in higher dimensions. In this talk, I will consider the Lüroth problem over a non-algebraically closed field k. Adapting in this context the strategy implemented by Clemens and Griffiths over C, I will describe new examples of k-varieties that are k-unirational, rational over the algebraic closure of k, but not k-rational. This is joint work with Olivier Wittenberg.

Sede

Sede: Palazzo Campana - Sito web
Indirizzo: Via Carlo Alberto 10
CAP: 10123
Città: TORINO