Modulus of analytic classification for unfoldings of resonant diffeomorphisms

Details Modulus of analytic classification for unfoldings of resonant diffeomorphisms Modulus of analytic classification for unfoldings of resonant diffeomorphisms

2006-08-22

arxiv.org/abs/math/0608545v1

Mathematics

Dynamical Systems

55 pages

Scientific paper

We provide a complete system of analytic invariants for unfoldings of non-linearizable resonant complex analytic diffeomorphisms as well as its geometrical interpretation. In order to fulfill this goal we develop an extension of the Fatou coordinates with controlled asymptotic behavior in the neighborhood of the fixed points. The classical constructions are based on finding regions where the dynamics of the unfolding is topologically stable. We introduce a concept of infinitesimal stability leading to Fatou coordinates reflecting more faithfully the analytic nature of the unfolding. These improvements allow us to control the domain of definition of a conjugating mapping and its power series expansion.

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