Periodic solution;
Fixed point theory;
Mixed monotone operator;
Existence and uniqueness;
FUNCTIONAL-DIFFERENTIAL EQUATIONS;
PARAMETERS;
D O I:
10.1016/j.aml.2017.03.013
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We study the existence and the uniqueness of positive periodic solutions for a class of integral equations of the form phi(x) = integral([x,x+w]boolean AND G) K(x,y)[f(1)(y, phi(y-tau(y))) + f(2)(y, phi(y-tau(y)))]dy, x is an element of G, where G is a closed subset of R-N with periodic structure. Our analysis relies on the fixed point theory for mixed monotone operator in Banach space. (C) 2017 Elsevier Ltd. All rights reserved.