Cicogna G.
Convergent Normal Forms of Symmetric Dynamical Systems
(21K, TeX)

ABSTRACT.  It is shown that the presence of Lie-point-symmetries of 
(non-Hamiltonian) dynamical systems can ensure the convergence 
of the coordinate transformations which take the dynamical 
sytem (or vector field) into Poincar\'e-Dulac normal form.