ZHANG Huiming, LI Jianjun. On rational interpolation to |x| at the Newman nodes[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2016,55(6):64-66.
ZHANG Huiming, LI Jianjun. On rational interpolation to |x| at the Newman nodes[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2016,55(6):64-66.DOI:
The rate of convergence for Newmantype rational interpolation to |x| is studied
and nodes near the zero of the Newman nodes are increased. Through the improvement of Newmans inequality
it is proved that the exact order of approximation is O〖JB((〗〖SX(〗1〖〗〖KF(〗n〖KF)〗e〖SX(〗3〖KF(〗n〖KF)〗〖〗2〖SX)〗〖SX)〗〖JB))〗
the result is better than the classical results of Newman. Further explanation: increases nodes in the near zero can improve the approximation order of the original.
关键词
Newman结点Newman型有理算子Newman不等式有理插值逼近阶
Keywords
Newman nodesNewman-type rational operatorsNewman inequalityrational interpolationorder of approximation.