考虑多元插值问题的插值余项估计问题。针对好误差公式的概念,给出了推广好误差公式的概念,并以三维 Cartesian 点集为例,利用 B 样条与差商的关系给出 Cartesian 点集Lagrange插值误差公式的积分形式。该结果可以推广到d维空间中。
This paper generalized good error formulas and considered Lagrange interpolation for Cartesian point sets.Taking 3-dimension Cartesian point sets for example,we provided the integral form of error formulas for this class of interpolation problem using the relationship between the B-spline and finite difference quotient.The results can be generalized in the d-dimensional Cartesian point sets.