English

On simultaneous linearization of certain commuting nearly integrable diffeomorphisms of the cylinder

Dynamical Systems 2022-02-24 v2

Abstract

Let F\mathcal{F} and K\mathcal{K} be commuting CC^\infty diffeomorphisms of the cylinder T×R\mathbb{T}\times\mathbb{R} that are, respectively, close to F0(x,y)=(x+ω(y),y)\mathcal{F}_0 (x, y)=(x+\omega(y), y) and Tα(x,y)=(x+α,y)T_\alpha (x, y)=(x+\alpha, y), where ω(y)\omega(y) is non-degenerate and α\alpha is Diophantine. Using the KAM iterative scheme for the group action we show that F\mathcal{F} and K\mathcal{K} are simultaneously CC^\infty-linearizable if F\mathcal{F} has the intersection property (including the exact symplectic maps) and K\mathcal{K} satisfies a semi-conjugacy condition. We also provide examples showing necessity of these conditions. As a consequence, we get local rigidity of certain class of Z2\mathbb{Z}^2-actions on the cylinder, generated by commuting twist maps.

Keywords

Cite

@article{arxiv.2106.16077,
  title  = {On simultaneous linearization of certain commuting nearly integrable diffeomorphisms of the cylinder},
  author = {Qinbo Chen and Danijela Damjanović and Boris Petković},
  journal= {arXiv preprint arXiv:2106.16077},
  year   = {2022}
}

Comments

35 pages, 1 figure