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X-WR-CALDESC:évènements pour Département de mathématiques et applications
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DTSTART:20190331T010000
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DTSTART:20191027T010000
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DTSTART;TZID=Europe/Paris:20191029T160000
DTEND;TZID=Europe/Paris:20191029T173000
DTSTAMP:20260425T045719
CREATED:20191029T150000Z
LAST-MODIFIED:20211104T140810Z
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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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