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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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TZOFFSETFROM:+0100
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TZNAME:CEST
DTSTART:20190331T010000
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TZOFFSETFROM:+0200
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DTSTART:20191027T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20191029T140000
DTEND;TZID=Europe/Paris:20191029T170000
DTSTAMP:20260501T091302
CREATED:20191029T130000Z
LAST-MODIFIED:20211104T135125Z
UID:8528-1572357600-1572368400@www.math.ens.psl.eu
SUMMARY:Après-midi de théorie de groupes
DESCRIPTION:14.00-14.45 Christophe Pittet (Genève)\, The exact convergence rate in the ergodic theorem of Lubotzky Phillips Sarnak.15.00-15.45 Thiebout Delabie (Orsay)\, High dimensional cuts and coarse embedding.16.15-17.00 Alina Vdovina (Newcastle)\, Ramanujan cubical complexes as higher-dimensional expanders.
URL:https://www.math.ens.psl.eu/evenement/apres-midi-de-theorie-de-groupes-5/
LOCATION:Salle W (DMA ENS)
CATEGORIES:Séminaire de théorie des groupes à l’ENS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20191029T160000
DTEND;TZID=Europe/Paris:20191029T173000
DTSTAMP:20260501T091302
CREATED:20191029T150000Z
LAST-MODIFIED:20211104T140810Z
UID:8529-1572364800-1572370200@www.math.ens.psl.eu
SUMMARY:Model theory of proalgebraic groups
DESCRIPTION:Inspired by the model theoretic study of profinite groups\, we discuss the foundations of a model theoretic approach to proalgebraic groups. Our axiomatization is based on the tannakian philosophy. Through a tensor analog of skeletal categories we are able to consider neutral tannakian categories with a fibre functor as many-sorted first order structures. The theory of a diagonalizable proalgebraic group is well understood. It is determined by the theory of the base field and the theory of its character group. This is joint work with Anand Pillay.
URL:https://www.math.ens.psl.eu/evenement/model-theory-of-proalgebraic-groups/
LOCATION:Sophie Germain salle 2015
CATEGORIES:Théorie des Modèles et Groupes
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