摘要
本文利用参变量取极限给出了若干个(n 维空间中)点集的并、交与差运算的解析表示,并利用此,可以近似地描述 n 维空间中的曲面(或曲线),还给出了误差估计.
In this paper,we give analytical expression of the operations in several sets,and find method of appreximate expression of the union,intersection and difference in several sets.
