This paper deals with a class of one element -degree polynomial differential equations. By the fixed point theory, we obtain periodic solutions of the equation. This paper generalizes some related conclusions of some papers.

中文翻译：

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一元度多项式微分方程周期解的存在性

这一类的一个元件的纸优惠-多项式微分方程。通过不动点理论，我们获得了方程的周期解。本文总结了一些论文的一些相关结论。