摘要
由在一个锥上使用一条固定的点定理与反馈控制调查下列延期差别系统的二个积极周期的解决方案的存在
By using a fixed point theorem on a cone to investigate the existence of two positive periodic solutions for the following delay difference system with feedback control argument of the form {△x(n)=-b(n)x(n)+f(n,x(n-τ1(n)),…,x(n-τm(n)),u(n-δ(n))),△u(n)=-η(n)u(n)+a(n)x(n-σ(n)),n∈Z.
基金
Supported by the National Natural Sciences Foundation of China(10361006)
Supported by the Natural Sciences Foundation of Yunnan Province(2003A0001M)
Supported by the Jiangsu "Qing-lanProject" for Excellent Young Teachers in University(2006)