Barycentric−Remez algorithms for best polynomial approximation in the chebfun system

Variants of the Remez algorithm for best polynomial approximation are presented based on two key features: the use of the barycentric interpolation formula to represent the trial polynomials, and the setting of the whole computation in the chebfun system, where the determination of local and global...

Полное описание

Библиографические подробности
Главные авторы: Pachόn, R, Trefethen, N
Формат: Report
Опубликовано: Oxford University Computing Laboratory 2008