In order to simplify calculation, the error function is defined according to the implicitequation of c…
为了简化计算，本文直接运用曲线的隐式表达式定义误差函数，并证明了这种方法的合理性。
2
Based on the new method, the paper discusses an inverse mapping of rational parameter surface, also, the implicitequation of the parametric equation is obtained.
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。
3
Using alternating segment explicit implicit method for the variable coefficient convection diffusion equation. The method has the obvious property of parallelism and is unconditionally stable.