Response Solutions of Degenerate Quasi-Periodic Systems Under Small Perturbations

• Song Ni ^[1] ; Junxiang Xu ^[1]
  1. [1] Southeast University

     Southeast University

     China

     
• Localización: Qualitative theory of dynamical systems, ISSN 1575-5460, Vol. 22, Nº 2, 2023
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • This paper considers a class of n-dimensional degenerate systems with a quasi-periodic perturbation whose frequency is a diophantine vector. Assume that the unperturbed system has the origin as an equilibrium, which is degenerate at one direction. By KAM iteration, we prove that the perturbed quasi-periodic system has a small response solution for sufficiently small perturbations. The proof is based on the idea of reducibility and the KAM technique of introducing parameters.