期刊名称：Journal of Interpolation and Approximation in Scientific Computing
印刷版ISSN：2194-3907
电子版ISSN：2194-3907
出版年度：2013
卷号：2013
DOI：10.5899/2013/jiasc-00028
出版社：ISPACS GmbH
摘要：We study an elegant and useful interpolation formula arising from the work of Frappier, Rahman and Ruscheweyh. We give a new and simple proof of that formula based on elementary properties of bound-preserving operators on classes of polynomials and we relate it to other known interpolation formulas.
