非线性方程解的存在性和唯一性问题的研究是非线性动力学的主要研究内容之一。

The research on the existence and uniqueness of solutions of nonlinear partial differential equations is one of main branches of nonlinear dynamics.

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非线性方程解的存在性和唯一性问题的研究是非线性动力学的主要研究内容之一。

By using of discrete Liapunov function, the existence of almost periodic solutions for a class of difference equations is investigated, a new result has been obtained.

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