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X-ORIGINAL-URL:https://www.math.ens.psl.eu
X-WR-CALDESC:évènements pour Département de mathématiques et applications
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TZID:Europe/Paris
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TZNAME:CEST
DTSTART:20120325T010000
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DTSTART:20121028T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20120120T160000
DTEND;TZID=Europe/Paris:20120120T170000
DTSTAMP:20260406T050550
CREATED:20120120T150000Z
LAST-MODIFIED:20211104T091747Z
UID:8055-1327075200-1327078800@www.math.ens.psl.eu
SUMMARY:Arithmetic of cubic surfaces
DESCRIPTION:We will look at the arithmitic properties of cubic surfaces. The main focus will be on 27 the lines and the Galois  action on them.Different descriptions of the moduli space of cubic surfaces are used to construct several Galois groups.Finally we will inspect the Manin conjecture for these surfaces.
URL:https://www.math.ens.psl.eu/evenement/arithmetic-of-cubic-surfaces/
LOCATION:Salle W
CATEGORIES:Variétés rationnelles
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20120120T173000
DTEND;TZID=Europe/Paris:20120120T183000
DTSTAMP:20260406T050550
CREATED:20120120T163000Z
LAST-MODIFIED:20211104T091831Z
UID:8056-1327080600-1327084200@www.math.ens.psl.eu
SUMMARY:K3 surfaces and their Picard groups
DESCRIPTION:The goal of this talk is to report on a project to compute the Picard rank for certain K3 surfaces. The methods are based on reduction modulo p. They will be explained in some detail and examples will be given.At the end of the talk\, a statistical test will be presented showing that for each K3 surface in two large samples\, suitable primes may be found and the Picard rank may be determined. The samples are motivated by classical families considered by 19th century geometers.
URL:https://www.math.ens.psl.eu/evenement/k3-surfaces-and-their-picard-groups/
LOCATION:Salle W
CATEGORIES:Variétés rationnelles
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