1208.2083 (WuHwan Jong et al.)

Existence of Invariant Tori for Differentiable Hamiltonian Vector Field
without Action-Angle Variables    [PDF]

WuHwan Jong, JinChol Paek

We proved the existence of invariant tori in differential Hamiltonian vector fields without action-angle variables. It is a generalization of the result of [Llave, 2005] that deals with analytic vector fields.

View original: http://arxiv.org/abs/1208.2083