We investigate global dynamics of the following systems of difference equations: {xn+1=b1xn2A1+yn2,yn+1=a2+c2yn2xn2,n=0,1,2,…, where the parameters b1, a2, A1, c2 are positive numbers and the initial condition y0 is an arbitrary nonnegative number and x0 is a positive number. We show that this system has rich dynamics which depends on the part of a parametric space. We find precisely the basins of attraction of all attractors including the points at ∞. MSC:39A10, 39A30, 37E99, 37D10.

, ...,0 } are nonnegative real numbers. We investigate the asymptotic behavior of the solutions of the considered equation. We give easy-to-check conditions for the global stability and global asymptotic stability of the zero or positive equilibrium of this equation.

We investigate the global behaviour of the difference equation of the form with non-negative parameters and initial conditions such that . We give a precise description of the basins of attraction of different equilibrium points, and show that the boundaries of the basins of attractions of different locally asymptotically stable equilibrium points or non-hyperbolic equilibrium points are in fact the global stable manifolds of neighbouring saddle or non-hyperbolic equilibrium points. Different types of bifurcations when one or more parameters are 0 are explained.

We investigate the local stability and the global asymptotic stability of the difference equation , with nonnegative parameters and initial conditions such that , for all . We obtain the local stability of the equilibrium for all values of parameters and give some global asymptotic stability results for some values of the parameters. We also obtain global dynamics in the special case, where , in which case we show that such equation exhibits a global period doubling bifurcation.

By using the KAM theory we investigate the stability of equilibrium solutions of the Gumowski-Mira equation: x n+1 = (2ax n)/(1 + x n 2) − x n−1, n = 0,1,…, where x −1, x 0 ∈ (−∞, ∞), and we obtain the Birkhoff normal forms for this equation for different equilibrium solutions.

We investigate the basins of attraction of equilibrium points and minimal period-two solutions of the difference equation of the form x n+1 = x n−1 2/(ax n 2 + bx n x n−1 + cx n−1 2), n = 0,1, 2,…, where the parameters a,  b, and  c are positive numbers and the initial conditions x −1 and x 0 are arbitrary nonnegative numbers. The unique feature of this equation is the coexistence of an equilibrium solution and the minimal period-two solution both of which are locally asymptotically stable.

Consider the difference equation where and the initial conditions are real numbers. We investigate the existence and nonexistence of the minimal period-two solution of this equation when it can be rewritten as the nonautonomous linear equation , where and the functions . We give some necessary and sufficient conditions for the equation to have a minimal period-two solution when .

We investigate global dynamics of the following systems of difference equationswhere the parameters are positive numbers and initial conditions and are arbitrary non-negative numbers. We find all possible dynamical scenarios for this system.

We investigate the global dynamics of several anticompetitive systems of rational difference equations which are special cases of general linear fractional system of the forms ., where all parameters and the initial conditions are arbitrary nonnegative numbers, such that both denominators are positive. We find the basins of attraction of all attractors of these systems.

1 MS Program in Mathematics Education, Richard W. Riley College of Education and Leadership, Walden University, 155 Fifth Avenue South, Minneapolis, MN 55401, USA 2Department of Mathematical Sciences, United Arab Emirates University, P.O. Box 17551, Al-Ain, United Arab Emirates 3 Department of Mathematics, University of Rhode Island, Kingston, RI 02881, USA 4Departament de Matematica Aplicada, IUMPA, Universitat Politecnica de Valencia, Edifici 7A, 46022 Valencia, Spain

1 MS Program in Mathematics Education, Richard W. Riley College of Education and Leadership, Walden University, 155 Fifth Avenue South, Minneapolis, MN 55401, USA 2Department of Mathematical Sciences, United Arab Emirates University, P.O. Box 17551, Al-Ain, United Arab Emirates 3 Department of Mathematics, University of Rhode Island, Kingston, RI 02881, USA 4Departament de Matematica Aplicada, IUMPA, Universitat Politecnica de Valencia, Edifici 7A, 46022 Valencia, Spain