Besides, the projecting formula of the circular arc is also listed in the paper, which can offer the computer a calculating method to draw stereoscopic projection.
2
利用不动点定理,我们得到了关于这类非线性投影方程解的一些新的存在性定理。
By using the fixed point theorem, we prove some new existence theorems of the solution for this class of nonlinear projection equations in Hilbert Spaces.
3
该算法首先利用结式法计算出两二次曲面相交时交线的投影方程,再对投影方程进行分解等处理。
The algorithm used the resultant method to computing the intersection's projection equation and deal with the projection equation through decomposition and so on.