TY  - JOUR 
AU  - Murua Uria, Ander
AU  - Sanz Serna, Jesús María
PY  - 2016
SN  - 0362-546X
UR  - http://uvadoc.uva.es/handle/10324/28910
AB  - We show how to use extended word series in the reduction of continuous and discrete dynamical systems to normal form and in the computation of formal invariants of motion in Hamiltonian systems. The manipulations required involve complex numbers...
LA  - eng
TI  - Computing normal forms and formal invariants of dynamical systems by means of word series
DO  - https://doi.org/10.1016/j.na.2015.10.013
ER  -