EXISTENCE OF MULTIPLE PERIODIC SOLUTIONS TO A SECOND-ORDER NONLINEAR DIFFERENCE SYSTEM |
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| Authors: | Weiming Tan Fang Su Xuewen Qin |
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| Institution: | Weiming Tan,Fang Su,Xuewen Qin (Institute of Math. and Physics,Wuzhou University,Wuzhou 543002,Guangxi) |
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| Abstract: | In this paper, by the critical point theory, a sufficient condition for the existence of multiple periodic solutions to a nonlinear second order difference system is obtained. An illustrative example is given. Our results improve and generalize some known ones. |
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| Keywords: | critical point theory nonlinear difference system multiple periodic solutions |
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