Constant-sign periodic and almost periodic solutions of a system of difference equations

被引:16
作者
Agrawal, PR [1 ]
O'Regan, D
Wong, PJY
机构
[1] Florida Inst Technol, Dept Math Sci, Melbourne, FL 32901 USA
[2] Natl Univ Ireland, Dept Math, Galway, Ireland
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
关键词
system of difference equations; constant-sign solutions; periodic solutions; almost periodic solutions;
D O I
10.1016/j.camwa.2005.03.020
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We consider the following system of difference equations, u(i) (k) = Sigma(e is an element of Z) gi (k, l) f (l u(1) (l), u(2) (l),...,u(2) (l)), k is an element of I, 1 <= i <= n, where I is a subset of Z. Our aim is to establish criteria such that the above system has a constant-sign periodic and almost periodic solution (u(1), u(2),...,u(n).). The above problem is also extended to that on u(1) (k) = Sigma(e is an element of Z) g(i) (k, l) fi (l, u(1) (l), u(2) (l),..., u(n), k is an element of Z, 1 <= i <= n. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1725 / 1754
页数:30
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