2014/11/25 by Marie-Claude Arnaud, Arnaud, M. -C, Pierre Berger +1
Mathematics · Physics and Astronomy · #Advanced Differential Equations and Dynamical Systems #Dynamical Systems (math.DS) #FOS: Mathematics #Mathematical Dynamics and Fractals #Quantum chaos and dynamical systems
paper · pdf · doi:10.48550/arxiv.1411.7072
openalex publication_date 2014/11/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The key result of this article is key lemma: if a Jordan curve γ is invariant by a given C 1+α -diffeomorphism f of a surface and if γ carries an ergodic hyperbolic probability μ, then μ is supported on a periodic orbit. From this Lemma we deduce three new results for the C 1+α symplectic twist maps f of the annulus: 1. if γ is a loop at the boundary of an instability zone such that f |γ has an irrational rotation number, then the convergence of any orbit to γ is slower than exponential; 2. if μ is an invariant probability that is supported in an invariant curve γ with an irrational rotation number, then γ is C 1 μ-almost everywhere; 3. we prove a part of the so-called "Greene criterion", introduced by J. M. Greene in [16] in 1978 and never proved: assume that (pn qn) is a sequence of rational numbers converging to an irrational number ω; let (f k (x n)) 1≤k≤qn be a minimizing periodic orbit with rotation number pn qn and let us denote by R n its mean residue R n = |1/2 -- Tr(Df qn (x n))/4|