Two Positive Periodic Solutions of Delay Functional Difference System with Feedback Control  

作　　者：GUO Peng-fei ZHU Xian-yang LI Yong-kun 

机构地区：[1]Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China [2]Department of Mathematics, Lianyungang Teachers College, Lianyungang 222006, China [3]Department of Mathematics, Shanghai University, Shanghai 200444, China [4]Department of Mathematics, Yunnan University, Kunming 650091, China

出　　处：《Chinese Quarterly Journal of Mathematics》2009年第1期102-107,共6页数学季刊（英文版）

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)

摘　　要：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.

关 键 词：delay difference system positive periodic solution feedback control fixed pointtheorem 

分 类 号：O175.7[理学—数学] TP273[理学—基础数学]