摘要
设函数系{_i(x)}■=1在离散点集 X 上线性无关,本文给出了最佳离散L_1逼近解集的几何性质与特性.
Geometric properties and characters for discrete L_1 linear approxima- tion are given under the condition that the system of approximating functions {(?)j(x)}~n_(?)is linear independent in a discrete point set X.
关键词
线性逼近
离散L
曲线拟合
best approximation
curve fitting
linear interpolation
