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一个无限可微函数类的最优埃尔米特插值CSCD
作者姓名:马孟瑾于晓晨许贵桥
作者单位:1.天津师范大学数学科学学院300387;
基金项目:Supported by the National Natural Science Foundation of China:11871006。
摘    要:
This paper investigates the optimal Hermite interpolation of a class F_(∞) of infinitely differentiable functions on[-1,1]in L_(∞)[-1,1]and weighted spaces L_(p,w)[-1,1],1≤p∞[-1,1]and L_(p,w)[-1,1],1≤p<∞ with w a continuous integrable weight function in(-1,1).We proved that the Lagrange interpolation polynomials based on the ze-ros of polynomials with the leading cofficient 1 of the least deviation from zero in L_(∞)[-1,1]and L_(p,w)[-1,1],1≤p<∞are optimal for 1≤p≤∞.We also give the optimal Hermite interpolation nodes when we ask the endpoints to be included in the nodes.

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