Uniform reconstruction of continuous functions with the RAFU method

Eduardo Corbacho Cortés

Abstract

The RAFU (radical functions) method can be used to obtain the uniformreconstruction of a continuous function from its values at some ofthe points of partitions of a closed interval. In this work we willprove that we can reconstruct a continuous function from average samplesof these points, from linear combinations of them and from local averagesamples given by convolution. Uniform error bounds will be established. If these data are unknown but approximate values of them are known, uniform reconstruction will be also possible. Error estimates in these cases will be given. The case of a non-uniform net will be treated. Examples and algorithms will be also shown.

Keywords

RAFU method, RAFU approximation, uniform approximation

Subject classification

41A30; 37L65; 41A65

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