- Volume 36 Issue 2
We introduce a Hamiltonian system which consists of two balls in the vertical line colliding elastically with each other and the floor. Wojtkowski proved that for the system of two linear balls with a linear potential (with gravity), there is a periodic orbit which becomes linearly stable if m1
- Mathematical Methods of Classical Mechanics Arnold, V. I.
- Commun. Math. Phys. v.126 A system of one dimensional balls with gravity Wojtkowski, M. P.
- J. Math. Phys. v.28 Linear stability of symplectic maps Howard, J.E.;Makay, R. S.