Seminar Event Detail

Colloquium Series

Date:  Tuesday, April 04, 2017
Location:  1360 East Hall (4:10 PM to 5:00 PM)

Title:  Around Grothendieck's theory of dessins d'enfants

Abstract:   This will be mainly an expository talk aiming to explain the correspondence introduced by Grothendieck in the 80's between algebraic curves defined over number fields and a certain kind of graphs embedded in compact orientable surfaces that he called designs d'infants (= children's drawings).

Towards the end of the talk I will attempt to mention two recent results obtained jointly with Andrei Jaikin-Zapirain concerning the action of the absolute Galois group $Gal(\overline{\mathbb{Q}}/\mathbb{Q})$ on regular dessins and on the topology of algebraic varieties defined over number fields.


Speaker:  Gabino Gonzalez-Diez
Institution:  Universidad Autonoma de Madrid

Event Organizer:     


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