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SUMMARY:A rationality criterion for varieties and applications to Fano thr
 eefolds
DTSTART:20231109T093000Z
DTEND:20231109T103000Z
DTSTAMP:20260504T062300Z
UID:indico-event-9992@indico.math.cnrs.fr
DESCRIPTION:Speakers: Ciro Ciliberto\n\nIn  1938 U. Morin\, improving on 
 earlier results by G. Fano (1918)\, stated a projective classification the
 orem for varieties of dimension $n\\geq 3$ whose general surface sections 
 are rational. Although Morin's result is correct\, his proof is wrong. In 
 the first part of this talk I will explain how to fix Morin's argument by 
 using ideas from Mori's theory already exploited by F. Campana and H. Flen
 ner to attack a quite similar problem. This part is joint work with C. Fon
 tanari. In the second part of the talk I will make some application to rat
 ionality of Fano threefolds.\n\nhttps://indico.math.cnrs.fr/event/9992/
LOCATION:salle 207 bâtiment 1R2  (Institut de Mathématiques de Toulouse)
URL:https://indico.math.cnrs.fr/event/9992/
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