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 JaikinZapirain 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.
Files:
Speaker: Gabino GonzalezDiez
Institution: Universidad Autonoma de Madrid
Event Organizer:
