Jordi Villanueva

KAM theory without action-angle variables

Rafael de la Llave, Antonio González, Àngel Jorba et al. · Nonlinearity · 2005 · 149 citations · Full text

On the normal behaviour of partially elliptic lower-dimensional tori of Hamiltonian systems

Àngel Jorba, Jordi Villanueva · Nonlinearity · 1997 · 108 citations

Hamiltonian Theory, Hamiltonian Systems, Physics +6

Normal-internal resonances in quasi-periodically forced oscillators: a conservative approach

Henk Broer, Jordi Villanueva, Florian Wagener · Nonlinearity · 2003 · 67 citations · Full text

Numerical computation of normal forms around some periodic orbits of the restricted three-body problem

Àngel Jorba, Jordi Villanueva · Physica D Nonlinear Phenomena · 1998 · 66 citations

Numerical Analysis, Normal Forms, Hamiltonian Theory +7

Effective Reducibility of Quasi-periodic Linear Equations Close To Constant Coefficients

Àngel Jorba, Rafael Ramírez-Ros, Jordi Villanueva · SIAM Journal on Mathematical Analysis · 1997 · 48 citations

Effective Reducibility, Oscillation Theory, Elliptic Constant Matrix +6