Journal
APPLIED MATHEMATICS LETTERS
Volume 64, Issue -, Pages 185-192Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.aml.2016.09.002
Keywords
Difference equations; Stability; Centre manifold
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We study the stability of the zero equilibrium of the following system of difference equations, which is a natural extension of an one-dimensional biological model: Xn+1 = a(1)X(n) + b(1)y(n)e(-x)n, Yn+1 = a(2)y(n) + b(2)Z(n)e(-y)n, z(n+1) = a(3)z(n) + b(3)x(n)e(-z)n where a(1), a(2), a(3), b(1), b(2), b(3) are real constants and the initial values conditions x(0), y(0) and z(0) are real numbers. The stability of those systems in the special case when one of the eigenvalues has absolute value equal to 1 and the other two eigenvalues have absolute value less than 1, using centre manifold theory, is investigated. (C) 2016 Elsevier Ltd. All rights reserved.
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