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运用重合度理论探讨了一类非线性问题的周期解的存在性.然后将其应用于一个厄尔尼诺-南方涛动时滞海气振子耦合模型周期解问题的研究,获得到了该模型存在周期解的新结果.
The coincidence degree theory is used to investigate the existence of periodic solutions for a class of nonlinear problems.And then it is applied to the periodic solution of a coupled El Niño-Southern Oscillation Oscillator model with periodic oscillations. The periodic solution of the model is obtained New result