ANALYTIC CLASSIFICATION OF GENERIC UNFOLDINGS OF ANTIHOLOMORPHIC PARABOLIC FIXED POINTS OF CODIMENSION

被引:0
|
作者
Godin, Jonathan [1 ]
Rousseau, Christiane [1 ]
机构
[1] Univ Montreal, Dept Math & Stat, CP 6128,Succ Ctr Ville, Montreal, PQ H3C 3J7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Discrete dynamical systems; antiholomorphic dynamics; parabolic fixed point; classification; unfoldings; modulus of analytic classification; RESONANT DIFFEOMORPHISM; GERMS; MULTICORNS; MODULUS;
D O I
10.17323/1609-4514-2023-23-2-169-203
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
. We classify generic unfoldings of germs of antiholomorphic diffeomorphisms with a parabolic point of codimension 1 (i.e., a double fixed point) under conjugacy. These generic unfoldings depend on one real parameter. The classification is done by assigning to each such germ a weak and a strong modulus, which are unfoldings of the modulus assigned to the antiholomorphic parabolic point. The weak and the strong moduli are unfoldings of the & PRIME;Ecalle-Voronin modulus of the second iterate of the germ which is a real unfolding of a holomorphic parabolic point. A preparation of the unfolding allows to identify one real analytic canonical parameter and any conjugacy between two prepared generic unfoldings preserves the canonical parameter. We also solve the realisation problem by giving necessary and sufficient conditions for a strong modulus to be realized. This is done simultaneously with solving the problem of the existence of an antiholomorphic square root to a germ of generic analytic unfolding of a holomorphic parabolic germ. As a second application we establish the condition for the existence of a real analytic invariant curve.
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页码:169 / 203
页数:35
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