Publications Books Curriculum Vita ( 2022) The math I do. These days I mostly work on the Nbody problem. I was trained in geometric mechanics. Work on geometric phases led me to the falling cat problem which led to subRiemannian geometry, control theory, and eventually to the threebody problem. I continue work from timetotime in these other areas. unpublished math recommended math books . 
Short StoryEssays I like to write. Beautiful web sites quotes I paddle and love being on rivers:

Nbody solutions animated subRiemannian Falling Cats they did the coin flip experiment! (posted Oct 12, 2023 ) Open Problem Lists Nonlinearity Collaborators Ph.D. Student Ph.D. student theses

