The links below allow you to download copies of computer presentations of some talks I have given. There are versions for Keynote '09, older version of Keynote and PDF. Unfortunately, the PDF versions will not show the movies.
Finding Brake Orbits. Talk given in Mexico City, December 2010. Describes an existence proof for simple, periodic orbits of the isosceles three-body problem which begin with zero initial velocity (i.e., they are periodic brake orbits)