Advances in Difference Equations
Volume 2006 (2006), Article ID 35847, 9 pages
doi:10.1155/ADE/2006/35847
Periodic solutions of arbitrary length in a simple integer iteration
University of Rhode Island, Kingston 02881, RI, USA
Received 28 May 2005; Accepted 19 July 2005
Copyright © 2006 Dean Clark. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
We prove that all solutions to the nonlinear second-order
difference equation in integers yn+1=⌈ayn⌉−yn−1,{a∈ℝ:|a|<2,a≠0,±1},y0,y1∈ℤ, are periodic. The first-order system representation of this equation is shown to have self-similar and
chaotic solutions in the integer plane.