English

On two and three periodic Lyness difference equations

Dynamical Systems 2013-07-26 v1

Abstract

We describe the sequences {x_n}_n given by the non-autonomous second order Lyness difference equations x_{n+2}=(a_n+x_{n+1})/x_n, where {a_n}_n is either a 2-periodic or a 3-periodic sequence of positive values and the initial conditions x_1,x_2 are as well positive. We also show an interesting phenomenon of the discrete dynamical systems associated to some of these difference equations: the existence of one oscillation of their associated rotation number functions. This behavior does not appear for the autonomous Lyness difference equations.

Keywords

Cite

@article{arxiv.0912.5031,
  title  = {On two and three periodic Lyness difference equations},
  author = {Anna Cima and Armengol Gasull and Victor Manosa},
  journal= {arXiv preprint arXiv:0912.5031},
  year   = {2013}
}

Comments

13 pages, 3 figures

R2 v1 2026-06-21T14:28:32.148Z