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TZID:Europe/Paris
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BEGIN:VEVENT
UID:6784@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20200310T110000
DTEND;TZID=Europe/Paris:20200310T120000
DTSTAMP:20241120T202007Z
URL:https://www.i2m.univ-amu.fr/evenements/ruiran-sun-seminaire-geometrie-
 complexe/
SUMMARY: (...): Xavier ROULLEAU - K3 surfaces with compact rational polyhed
 ral effective cone and Picard number larger than 2
DESCRIPTION:: Nikulin and Vinberg classified K3 surfaces which have a compa
 ct rational polyhedral effective cone and Picard number $&gt\;2$. These su
 rfaces have a finite automorphism group and no elliptic fibrations \; ther
 e are 8 families of such a surfaces.\nThe Nikulin-Vinberg classification i
 s obtained by using the Torelli Theorem and by explicitly describing the N
 éron-Severi group of these surfaces.\nIn this talk\, using their previous
  results\, we will present a more geometric description and construction o
 f these surfaces. In particular we give some explicit exemples\, and in so
 me case we discuss about the unirationality of their moduli spaces.
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/01/Xavier_Roulleau.jpg
CATEGORIES:Séminaire,Géométrie Complexe
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TZID:Europe/Paris
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DTSTART:20191027T020000
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