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• The existence of periodic solution to nonlinear functional difference equation is considered by using the topological degree, and a periodic solution of this problem is obtained.

利用拓扑理论一类非线性泛函差分方程周期存在性进行了讨论，得到问题周期一个存在定理。

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• By using fixed point theorem and constructing almost periodic sequence solution for difference equation, the authors get the sufficient conditions for the existence of the almost periodic solution.

利用不动方法差分方程构造周期获得概周期解存在充分条件

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• A kind of ordinary difference equation that can be transferred to Euler equation, often appears in polar coordinates solution of elastic problems.

弹性力学问题极坐标解答中，经常会遇到一类转化欧拉方程常微分方程。

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• We adopt two kinds of different mesh refinement process combining extrapolation of difference solution for more accurately solving tokamak plasma equilibrium equation.

利用不同网格精细化方法与差分方程解外推过程相结合，能精确地求解等离子平衡方程

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• By use of the time split method, a conservation difference formula is established to find the solution to the shallow water equation based on the finite volume control method from integral equations.

采用二分步法积分型方程出发，有限控制建立守恒差分格式，对二维浅水波方程进行求解

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• A finite difference method based on differential-integral equation is presented for the solution of Navier-Stokes equations for incompressible viscous flow.

本文提出了基于微分-积分方程组求解n - S方程有限差分求解不可压缩实际粘性流体绕孤立翼型流动。

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• The instability of Muskingum routing method used in the flood inverse routing in river channel was proved by using difference solution of motion wave equation.

基于河道汇流单位线原理，提出了解决河道洪水反向演算断面流量相关

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• The instability of Muskingum routing method used in the flood inverse routing in river channel was proved by using difference solution of motion wave equation.

基于河道汇流单位线原理，提出了解决河道洪水反向演算断面流量相关

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