Exterior differential systems and billiards
arXiv:math/0609504
Abstract
I describe work in progress with Baryshnikov and Zharnitsky on periodic billiard orbits that leads one to an exterior differential system (EDS). I then give a brief introduction to EDS illustrated by several examples.
20 pages, appeared in the proceedings from the seventh international conference on geometry, integrability and quantization, Varna 2005