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On a system of three difference equations of higher order solved in terms of Lucas and Fibonacci numbers

  • Amira Khelifa EMAIL logo , Yacine Halim , Abderrahmane Bouchair and Massaoud Berkal
From the journal Mathematica Slovaca

Abstract

In this paper we give some theoretical explanations related to the representation for the general solution of the system of the higher-order rational difference equations

xn+1=1+2ynk3+ynk,yn+1=1+2znk3+znk,zn+1=1+2xnk3+xnk,

where n, k∈ ℕ0, the initial values xk, xk+1, …, x0, yk, yk+1, …, y0, zk, zk+1, …, z1 and z0 are arbitrary real numbers do not equal −3. This system can be solved in a closed-form and we will see that the solutions are expressed using the famous Fibonacci and Lucas numbers.


This work was supported by Directorate general for Scientific Research and Technological Development, Algeria.


  1. Communicated by Michal Fečkan

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Received: 2019-09-25
Accepted: 2019-11-15
Published Online: 2020-05-23
Published in Print: 2020-06-25

© 2020 Mathematical Institute Slovak Academy of Sciences

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