• Computation of limit cycles and their isochrons: Fast algorithms and their convergence 

    Huguet Casades, Gemma; Llave Canosa, Rafael de la (2013)
    Article
    Accés restringit per política de l'editorial
    We present efficient algorithms to compute limit cycles and their isochrons (i.e., the sets of points with the same asymptotic phase) for planar vector fields. We formulate a functional equation for the parameterization ...
  • Limit cycles and Lie symmetries 

    Freire, Emilio; Gasull Embid, Armengol; Guillamon Grabolosa, Antoni (2005)
    Article
    Accés obert
    Given a planar vector field U which generates the Lie symmetry of some other vector field X, we prove a new criterion to control the stability of the periodic orbits of U. The problem is linked to a classical problem ...