scholarly journals Asymptotic Dynamics of a Class of Third Order Rational Difference Equations

2020 ◽  
Author(s):  
Sk Sarif Hassan ◽  
Soma Mondal ◽  
Swagata Mandal ◽  
Chumki Sau
Keyword(s):  
Periodic Solutions ◽  
Difference Equations ◽  
Real Line ◽  
Real Numbers ◽  
Positive Real ◽  
Third Order ◽  
Rational Difference Equations ◽  
Initial Values ◽  
Asymptotic Dynamics ◽  
Positive Real Line

The asymptotic dynamics of the classes of rational difference equations (RDEs) of third order defined over the positive real-line as $$\displaystyle{x_{n+1}=\frac{x_{n}}{ax_n+bx_{n-1}+cx_{n-2}}}, \displaystyle{x_{n+1}=\frac{x_{n-1}}{ax_n+bx_{n-1}+cx_{n-2}}}, \displaystyle{x_{n+1}=\frac{x_{n-2}}{ax_n+bx_{n-1}+cx_{n-2}}}$$ and $$\displaystyle{x_{n+1}=\frac{ax_n+bx_{n-1}+cx_{n-2}}{x_{n}}}, \displaystyle{x_{n+1}=\frac{ax_n+bx_{n-1}+cx_{n-2}}{x_{n-1}}}, \displaystyle{x_{n+1}=\frac{ax_n+bx_{n-1}+cx_{n-2}}{x_{n-2}}}$$ is investigated computationally with theoretical discussions and examples. It is noted that all the parameters $a, b, c$ and the initial values $x_{-2}, x_{-1}$ and $x_0$ are all positive real numbers such that the denominator is always positive. Several periodic solutions with high periods of the RDEs as well as their inter-intra dynamical behaviours are studied.

Global behavior of two third order rational difference equations with quadratic terms

2019 ◽  
Vol 69 (1) ◽  
pp. 147-158 ◽  
Author(s):  
R. Abo-Zeid
Keyword(s):  
Explicit Formula ◽  
Difference Equations ◽  
Initial Conditions ◽  
Global Behavior ◽  
Real Numbers ◽  
Positive Real ◽  
Third Order ◽  
Rational Difference Equations ◽  
The Difference

Abstract In this paper, we determine the forbidden sets, introduce an explicit formula for the solutions and discuss the global behaviors of solutions of the difference equations $$\begin{array}{} \displaystyle x_{n+1}=\frac{ax_{n}x_{n-1}}{bx_{n-1}+ cx_{n-2}},\quad n=0,1,\ldots \end{array} $$ where a,b,c are positive real numbers and the initial conditions x−2,x−1,x0 are real numbers.

scholarly journals Global Character of a Six-Dimensional Nonlinear System of Difference Equations

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Mehmet Gümüş ◽  
Yüksel Soykan
Keyword(s):  
Nonlinear System ◽  
Positive Solutions ◽  
Difference Equations ◽  
Dynamical Behavior ◽  
Real Numbers ◽  
System Of Difference Equations ◽  
Positive Real ◽  
Rational Difference Equations ◽  
Initial Values ◽  
Global Character

The aim of this paper is to study the dynamical behavior of positive solutions for a system of rational difference equations of the following form:un+1=αun-1/β+γvn-2p,vn+1=α1vn-1/β1+γ1un-2p,n=0,1,…, where the parametersα,β,γ,α1,β1,γ1,pand the initial valuesu-i,v-ifori=0,1,2are positive real numbers.

scholarly journals On the Solutions of a System of Third-Order Rational Difference Equations

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
A. M. Alotaibi ◽  
M. S. M. Noorani ◽  
M. A. El-Moneam
Keyword(s):  
Difference Equations ◽  
Initial Conditions ◽  
Theoretical Discussion ◽  
Real Numbers ◽  
Nonlinear Difference Equations ◽  
Positive Real ◽  
Third Order ◽  
Numerical Examples ◽  
Rational Difference Equations

The structure of the solutions for the system nonlinear difference equations xn+1=ynyn-2/(xn-1+yn-2), yn+1=xnxn-2/(±yn-1±xn-2), n=0,1,…, is clarified in which the initial conditions x-2, x-1, x0, y-2, y-1, y0 are considered as arbitrary positive real numbers. To exemplify the theoretical discussion, some numerical examples are presented.

scholarly journals On the solutions of a class of max-min-type difference equation system

2019 ◽  
Vol 13 (1) ◽  
pp. 165-177
Author(s):  
Huili Ma ◽  
Haixia Wang
Keyword(s):  
Difference Equation ◽  
Periodic Solutions ◽  
Difference Equations ◽  
Equation System ◽  
Real Numbers ◽  
Positive Real ◽  
General Solutions ◽  
Initial Values

We mainly investigate the general solutions and periodic solutions to the following system of max-type difference equations xn+1 = max{y2n-1, An/yn-1}, yn+1 = min{x2n-1,Bn/xn-1}, where n ? N, (An)n?N and (Bn)n?N are positive real sequences, and the initial values x-1 = ?, x0= ?; y-1= ?, y0 = ? are real numbers.

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

2020 ◽  
Vol 70 (3) ◽  
pp. 641-656
Author(s):  
Amira Khelifa ◽  
Yacine Halim ◽  
Abderrahmane Bouchair ◽  
Massaoud Berkal
Keyword(s):  
General Solution ◽  
Closed Form ◽  
Difference Equations ◽  
Fibonacci Numbers ◽  
Higher Order ◽  
Real Numbers ◽  
Lucas Numbers ◽  
Rational Difference Equations ◽  
Initial Values ◽  
Fibonacci And Lucas Numbers

AbstractIn 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$$\begin{array}{} \displaystyle x_{n+1} = \dfrac{1+2y_{n-k}}{3+y_{n-k}},\qquad y_{n+1} = \dfrac{1+2z_{n-k}}{3+z_{n-k}},\qquad z_{n+1} = \dfrac{1+2x_{n-k}}{3+x_{n-k}}, \end{array}$$where n, k∈ ℕ0, the initial values x−k, x−k+1, …, x0, y−k, y−k+1, …, y0, z−k, z−k+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.

scholarly journals On Positive Solutions for the Rational Difference Equation Systems xn+1=A/xnyn2, and yn+1=Byn/xn-1yn-1

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Hui-li Ma ◽  
Hui Feng
Keyword(s):  
Difference Equation ◽  
Positive Solutions ◽  
Difference Equations ◽  
Real Numbers ◽  
Positive Real ◽  
Rational Difference Equations ◽  
Rational Difference Equation

Our aim in this paper is to investigate the behavior of positive solutions for the following systems of rational difference equations: xn+1=A/xnyn2, and yn+1=Byn/xn-1yn-1, n=0,1,…, where x-1, x0, y-1, and y0 are positive real numbers and A and B are positive constants.

scholarly journals Explicit Solutions and Bifurcations for a System of Rational Difference Equations

Mathematics ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 69
Author(s):  
Bashir Al-Hdaibat ◽  
Saleem Al-Ashhab ◽  
Ramadan Sabra
Keyword(s):  
Hypergeometric Function ◽  
Difference Equations ◽  
Explicit Solution ◽  
Initial Conditions ◽  
Global Dynamics ◽  
Explicit Solutions ◽  
Real Numbers ◽  
Positive Real ◽  
Rational Difference Equations

In this paper, we consider the explicit solution of the following system of nonlinear rational difference equations: x n + 1 = x n - 1 / x n - 1 + r , y n + 1 = x n - 1 y n / x n - 1 y n + r , with initial conditions x - 1 , x 0 and y 0 , which are arbitrary positive real numbers. By doing this, we encounter the hypergeometric function. We also investigate global dynamics of this system. The global dynamics of this system consists of two kind of bifurcations.

scholarly journals Periodic Solutions of a System of Nonlinear Difference Equations with Periodic Coefficients

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Durhasan Turgut Tollu
Keyword(s):  
Periodic Solution ◽  
Positive Solution ◽  
Periodic Solutions ◽  
Difference Equations ◽  
Real Numbers ◽  
Nonlinear Difference Equations ◽  
System Of Difference Equations ◽  
Positive Real ◽  
Long Term Behavior

This paper is dealt with the following system of difference equations x n + 1 = a n / x n + b n / y n , y n + 1 = c n / x n + d n / y n , where n ∈ ℕ 0 = ℕ ∪ 0 , the initial values x 0   and   y 0 are the positive real numbers, and the sequences a n n ≥ 0 , b n n ≥ 0 , c n n ≥ 0 , and d n n ≥ 0 are two-periodic and positive. The system is an extension of a system where every positive solution is two-periodic or converges to a two-periodic solution. Here, the long-term behavior of positive solutions of the system is examined by using a new method to solve the system.

Asymptotic approximation of solutions of nonlinear third order difference equations

2011 ◽  
Vol 61 (1) ◽  
Author(s):  
N. Parhi ◽  
Anita Panda
Keyword(s):  
Difference Equations ◽  
Asymptotic Approximation ◽  
Gronwall Inequality ◽  
Real Numbers ◽  
Positive Real ◽  
Third Order ◽  
Order Difference ◽  
Asymptotic Bounds ◽  
Grönwall Inequality

AbstractIn this paper, we obtain asymptotic bounds, under appropriate conditions, of solutions of third order difference equations of the form $$ \Delta (p_{n - 1} \Delta (r_{n - 1} \Delta y_{n - 1} )) = f(n,y_n \Delta y_{n - 1} ) + g(n,y_n \Delta y_{n - 1} ), $$ where {p n} and {r n} are sequences of positive real numbers, and f, g: ℕ×ℝ2 → ℝ. Different forms of discrete Gronwall inequality are used to obtain these results.

ASYMPTOTIC DYNAMICS OF A CLASS OF THIRD ORDER RATIONAL DIFFERENCE EQUATIONS

2020 ◽  
Vol 32 (1) ◽  
pp. 21-49
Author(s):  
Sk. Sarif Hassan ◽  
Soma Mondal ◽  
Swagata Mandal ◽  
Chumki Sau
Keyword(s):  
Difference Equations ◽  
Third Order ◽  
Rational Difference Equations ◽  
Asymptotic Dynamics
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