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X-WR-CALNAME:Département de mathématiques et applications
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
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20100328T010000
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TZOFFSETFROM:+0200
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DTSTART:20101031T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20100312T163000
DTEND;TZID=Europe/Paris:20100312T163000
DTSTAMP:20260406T031745
CREATED:20100312T153000Z
LAST-MODIFIED:20211104T085140Z
UID:7893-1268411400-1268411400@www.math.ens.psl.eu
SUMMARY:Problèmes de plongements métriques
DESCRIPTION:En s’inspirant du livre Matousek et d’un survol qui constitue une mise à jour d’une partie de ce livre\, Arnaud explique différents problèmes et résultats sur les plongements d’espaces métriques finis dans les L^p\, et des L^p entre eux.
URL:https://www.math.ens.psl.eu/evenement/problemes-de-plongements-metriques/
LOCATION:ENS Salle R
CATEGORIES:Groupe de lecture de complexité algorithmique
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20100319T163000
DTEND;TZID=Europe/Paris:20100319T163000
DTSTAMP:20260406T031745
CREATED:20100319T153000Z
LAST-MODIFIED:20211104T085139Z
UID:7891-1269016200-1269016200@www.math.ens.psl.eu
SUMMARY:Minoration en log(n)^a de la constante de Goemans-Linial\, d'après Cheeger\, Kleiner et Naor\, II
DESCRIPTION:On donne un aperçu de la preuve
URL:https://www.math.ens.psl.eu/evenement/minoration-en-logna-de-la-constante-de-goemans-linial-dapres-cheeger-kleiner-et-naor-ii/
LOCATION:ENS Salle R
CATEGORIES:Groupe de lecture de complexité algorithmique
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20100324T000000
DTEND;TZID=Europe/Paris:20100324T000000
DTSTAMP:20260406T031745
CREATED:20100323T230000Z
LAST-MODIFIED:20211104T085039Z
UID:7871-1269388800-1269388800@www.math.ens.psl.eu
SUMMARY:Introduction to curved dg-algebras
DESCRIPTION:
URL:https://www.math.ens.psl.eu/evenement/introduction-to-curved-dg-algebras/
CATEGORIES:Vers la théorie de Hodge non commutative
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20100324T153000
DTEND;TZID=Europe/Paris:20100324T153000
DTSTAMP:20260406T031745
CREATED:20100324T143000Z
LAST-MODIFIED:20211104T085127Z
UID:7890-1269444600-1269444600@www.math.ens.psl.eu
SUMMARY:Hirzebruch-Riemann-Roch for K-theoretic Gromov-Witten invariants in genus-0
DESCRIPTION:K-theoretic Gromov-Witten invariants are holomorphic Euler characteristicsof various interesting vector bundles over Kontsevich’s moduli spaces ofstable maps.The problem of computing these invariants is well-motivated by examples offlag manifolds\, where quantum K-theory turned out to be related toquantum groups and finite-difference versions of Toda lattices (prettymuch the same way as quantum cohomology theory of flag manifolds isrelated to semisimple Lie groups and differential Toda lattices).Although it seems natural to express K-theoretic Gromov-Witten invariantsin terms of the usual (cohomological) ones by means of the formula ofRiemann-Roch-Hirzebruch\, there has been little success in doing so\, mostlybecause moduli spaces of stable maps behave like orbifolds (rather thanmanifolds).The talk will be an introduction\, based on the examples of CP^n as target spaces\, into an emerging new theory which seems to resolve this decade-oldproblem in a rather elegant way. This is a joint work in progress of thespeaker and Valentin Tonita.
URL:https://www.math.ens.psl.eu/evenement/hirzebruch-riemann-roch-for-k-theoretic-gromov-witten-invariants-in-genus-0/
CATEGORIES:Vers la théorie de Hodge non commutative
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20100326T163000
DTEND;TZID=Europe/Paris:20100326T163000
DTSTAMP:20260406T031745
CREATED:20100326T153000Z
LAST-MODIFIED:20211104T085140Z
UID:7894-1269621000-1269621000@www.math.ens.psl.eu
SUMMARY:Le théorème de plongement d'Assouad
DESCRIPTION:C’est le fameux théorème d’Assouad sur le plongement dans l’espace euclidien d’espaces de dimension d’Assouad finie.
URL:https://www.math.ens.psl.eu/evenement/le-theoreme-de-plongement-dassouad/
LOCATION:ENS Salle R
CATEGORIES:Groupe de lecture de complexité algorithmique
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