数学季刊 ›› 2016, Vol. 31 ›› Issue (3): 260-268.doi: 10.13371/j.cnki.chin.q.j.m.2016.03.004
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.
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