Cohomology fractals

Professor Saul Schleimer

University of Warwick, UK
Barton Lectures in Computational Mathematics


Date: Wednesday, November 18, 2020
Time: 4:00 pm - 5:00 pm
Location: Zoom

Abstract: We introduce “cohomology fractals”; these are a sort of dual to Cannon-Thurston maps for hyperbolic three-manifolds.  We have implemented these using a novel ray-tracing algorithm.  It is designed to be fast; in fact, it runs in your browser!  After recalling some of the history of hand- and computer-drawn images of Kleinian groups, I will explain both cohomology fractals and the implementation of the browser application.

This is joint work with David BachmanMatthias Goerner, and Henry Segerman.  Please see our YouTube videos or our expository paper for more details


All talks will be held virtually through Zoom.  Please contact for talk links.