Preprint D10/2005
Topological Classification of Families of Diffeomorphisms Without Small Divisors
Javier Ribon
Keywords: Diffeomorphisms | topological classification | bifurcation theory | normal form | structural stability | tangent to the identity germs of diffeomorphism
We give a complete topological classification for germs of one-parameter families of one-dimensional complex analytic diffeomorphisms without small divisors. In the non-trivial cases the topological invariants are given by some functions attached to the fixed points set plus the analytic class of the element of the family corresponding to the special parameter. The proof is based on the structure of the limits of orbits when we approach the special parameter.