在代数几何中，有理映射是定义在概形的稠密开集上的态射。有理映射及由此引生的双有理等价是古典代数几何学的主要对象。
用该方法对基于有理参数曲面的逆映射进行了一些探讨，并得到参数曲面的隐式方程。
Based on the new method, the paper discusses an inverse mapping of rational parameter surface, also, the implicit equation of the parametric equation is obtained.
前馈神经网络由于具有理论上逼近任意非线性连续映射的能力，因而非常适合于非线性系统建模及构成自适应控制。
Because the feedforward neural network has an ability of approach to arbitrary nonlinear mapping, it can be used effectively in the modeling and controlling of nonlinear system.
本文给出了2 -距离空间中有理压缩型映射对的几个公共不动点定理，改进并推广了某些已有的结果。
In this paper we present several common fixed point theorems for the form of rational compress pair of mapping in 2-metric space. The results improve and generalize some known results.
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