Monthly Archives: December 2011

Quasigeodesic flows on hyperbolic 3-manifolds

My student Steven Frankel has just posted his paper Quasigeodesic flows and Mobius-like groups on the arXiv. This heartbreaking work of staggering genius interesting paper makes a deep connection between dynamics, hyperbolic geometry, and group theory, and represents the first significant progress … Continue reading

Posted in 3-manifolds, Dynamics, Hyperbolic geometry | Tagged , , , , , , , , , , | Leave a comment

Laying train tracks

This morning I was playing trains with my son Felix. At the moment he is much more interested in laying the tracks than putting the trains on and moving them around, but he doesn’t tend to get concerned about whether … Continue reading

Posted in Ergodic Theory, Euclidean Geometry | Tagged , , , , | 17 Comments