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TZOFFSETFROM:+0100
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DTSTART:20240331T010000
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DTSTART;TZID=Europe/Paris:20241113T110000
DTEND;TZID=Europe/Paris:20241113T120000
DTSTAMP:20260409T211947
CREATED:20241105T161955Z
LAST-MODIFIED:20241105T162416Z
UID:18585-1731495600-1731499200@www.math.ens.psl.eu
SUMMARY:Vlerë Mehmeti\, raconte-moi l'uniformisation de Koebe--Mumford !
DESCRIPTION:Koebe a démontré un résultat d’uniformisation pour les surfaces de Riemann compactes à travers les « groupes de Schottky ». Ce résultat a été étendu au cadre non archimédien par Mumford. J’expliquerai comment\, en utilisant les « espaces de Berkovich »\, on peut mener une étude uniforme de tous ces objets et de leurs invariants associés.
URL:https://www.math.ens.psl.eu/evenement/vlere-mehmeti-raconte-moi-luniformisation-de-koebe-mumford/
LOCATION:DMA Salle W
CATEGORIES:Algèbre et géométrie,Séminaire Raconte-moi
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241127T110000
DTEND;TZID=Europe/Paris:20241127T120000
DTSTAMP:20260409T211947
CREATED:20241122T133440Z
LAST-MODIFIED:20241122T133440Z
UID:18670-1732705200-1732708800@www.math.ens.psl.eu
SUMMARY:Russel Avdek\, tell me about the complex origins of mapping class relations !
DESCRIPTION:I’ll talk about relations between products of Dehn twists along simple closed curves on an oriented surface F. We view these products as elements of the boundary-relative mapping class group of F. A famous example is the `lantern relation’\, discovered by D. Johnson in the 70s by drawing pictures. I’ll describe how many such relations\, such as the lantern\, can be discovered by viewing F as a complex 1-manifold sitting inside of a complex 2-manifold as part of a `Lefschetz fibration’. Time permitting\, I’ll mention higher-dimensional generalizations and open problems.
URL:https://www.math.ens.psl.eu/evenement/russel-avdek-tell-me-about-the-complex-origins-of-mapping-class-relations/
LOCATION:DMA Salle W
CATEGORIES:Algèbre et géométrie,Séminaire Raconte-moi
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