Now showing items 3-4 of 4

  • Lindstedt series for lower dimensional tori 

    Jorba, Angel; Llave Canosa, Rafael de la; Zou, Maorong (1995)
    Article
    Open Access
    We consider the existence and effective computation of low-dimensional (less independent frequencies than degrees of freedom) invariant tori of a near-integrable system. Lindstedt method is a systematic procedure to compute ...
  • On quasiperiodic perturbations of elliptic equilibrium points 

    Jorba, Angel; Simó Torres, Carlos (1995)
    Article
    Open Access
    This work focusses on quasiperiodic time-dependent perturbations of ordinary differential equations near elliptic equilibrium points. This means studying $$ \dot{x}=(A+\varepsilon Q(t,\varepsilon))x+\varepsilon ...