TITLE: 
An algorithm to generate canonical transformations:
application to normal forms.

AUTHOR:
Alex Haro
Departament de Matematica Aplicada i Analisi,
Universitat de Barcelona,
Gran Via 585, 08007 Barcelona, Spain
E-mail: haro@mat.ub.es

ABSTRACT:
We describe a new method to generate symplectic diffeomorphisms. This method
is based on primitive functions. 
We apply the algorithm to the construction of normal forms of KAM tori. 
A concrete application, developed in detail and implemented numerically, is 
normal forms near invariant circles.