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.
By using critical point theory, we study periodic solutions for a class of fourth- order 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.
基金
Supported by the National Natural Science Foundation of China(31260098)