讨论了一类矩形单元上的插值问题,指出这类插值问题是可解的,其解是分片二元三次多项式,且在矩形单元上是C^2-连续的.证明了这类插值问题的解的存在性与唯一性,并给出了解样条的分片表达式
The interpolation method of bivariate cubic splines on a rectangular unit with C^2-continuity was considered. Existence and uniqueness of interpolated splines were obtained, divisional expression of interpolating splines was provided