Multiple Periodic Solutions for a Class of Fourth-order Difference Systems  

一类四阶差分系统的多重周期解（英文）

作　　者：张申贵 

机构地区：[1]College of Mathematics and Computer Science,Northwest University for Nationalities

出　　处：《Chinese Quarterly Journal of Mathematics》2016年第3期260-268,共9页数学季刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China(31260098)

摘　　要：By using critical point theory,we study periodic solutions for a class of fourthorder difference systems with partially periodic potential and linear nonlinearity.Some sufficient conditions for the existence of multiplicity of periodic solutions are obtained via generalized saddle point theorem.

关 键 词：periodic solutions fourth-order difference system critical point 

分 类 号：O175.8[理学—数学]