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Upcoming Event:

Distinguished speaker talk by Prof Le Gall

Event Description


  • The Arthur and Rochelle Belfer Institute of Mathematics and Computer Science


  • Jean-Francois Le Gall, Université Paris-Sud

Lecture title:  Brownian geometry on the sphere

Abstract :
Much recent work has been devoted to the metric properties of large random graphs drawn on the two-dimensional sphere, which  are also called random planar maps. Starting from a triangulation of the sphere with a given number of faces (triangles) and chosen uniformly at random, one considers the metric space consisting of the vertex set of this triangulation equipped with the graph distance.  When the size of the triangulation tends to infinity, this suitably rescaled random metric space converges in distribution, in the Gromov-Hausdorff sense, to a random compact metric space called the Brownian sphere (or Brownian map). We will survey recent results showing that the Brownian sphere is indeed a universal model of random geometry in two dimensions. We will also introduce related models such as the Brownian disk and the Brownian plane, and we will discuss their connections with the Brownian sphere.

Ziskind Building, Room 1
May 29, 2019
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