From topology to numbers

Department of Mathematics Colloquium

Meeting Details

For more information about this meeting, contact Kristin Berrigan, Stephanie Geyer, Sergei Tabachnikov, Dmitri Burago, Alberto Bressan, Nigel Higson.

Speaker: Florian Pop, University of Pennsylvania

Abstract: One of the main questions of Grothendieck's "Esquisse d'un Programme" was to give a topological and combinatorial description of the absolute Galois group of the rational numbers (that is, of the automorphism group of field of all algebraic numbers). The question generated a really impressive research activity and body of work, with seminal papers by Deligne, Drinfel'd, and Ihara, followed by many others. The plan for the talk is to give a light introduction to the subject, and briefly discuss a few old results and a new one.


Room Reservation Information

Room Number: 114 McAllister

Date: 10/10/2019

Time: 3:30pm - 4:30pm