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Global behavior of positive solutions of a third order difference equations system (2108.05534v1)

Published 12 Aug 2021 in math.CA

Abstract: \begin{abstract} In this paper, we consider the following system of difference equations \begin{equation*} x_{n+1}=\alpha+\dfrac{y_{n}p}{y_{n-2}p},\ y_{n+1}=\alpha+ \dfrac{x_{n}q}{x_{n-2}q}, \ n=0, 1, 2, ... \end{equation*} where parameters $\alpha, p, q \in (0, \infty)$ and the initial values $x_{-i}$, $y_{-i}$ are arbitrary positive numbers for $ i=-2,-1, 0$. Our main aim is to investigate semi-cycle analysis of solutions of above system. Also, we study the boundedness of the positive solutions and the global asymptotic stability of the equilibrium point in case $\alpha>1$, $ 0<p,\ q\leq 1$. Moreover, the rate of convergence of the solutions is established. Finally, some numerical examples are given to illustrate our theoretical results.

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