Recent progress on univariate and multivariate polynomial and spline quasi-interpolants

Details Recent progress on univariate and multivariate polynomial and spline quasi-interpolants Recent progress on univariate and multivariate polynomial and spline quasi-interpolants

2004-05-03

arxiv.org/abs/math/0405033v1

Mathematics

Numerical Analysis

Scientific paper

Polynomial and spline quasi-interpolants (QIs) are practical and effective approximation operators. Among their remarkable properties, let us cite for example: good shape properties, easy computation and evaluation (no linear system to solve), uniform boundedness independently of the degree (polynomials) or of the partition (splines), good approximation order. We shall emphasize new results on various types of univariate and multivariate polynomial or spline QIs, depending on the nature of coefficient functionals, which can be differential, discrete or integral. We shall also present some applications of QIs to numerical methods.

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