BEST QUADRATURE FORMULAS FOR CLASSES OF DIFFERENTIABLE FUNCTIONS AND PIECEWISE-POLYNOMIAL APPROXIMATION
@article{Korneiuk1969BESTQF, title={BEST QUADRATURE FORMULAS FOR CLASSES OF DIFFERENTIABLE FUNCTIONS AND PIECEWISE-POLYNOMIAL APPROXIMATION}, author={N. Kornei{\vc}uk and N. E. Lu{\vs}paĭ}, journal={Mathematics of The Ussr-izvestiya}, year={1969}, volume={3}, pages={1335-1355} }
In this article we obtain characteristic properties of piecewise-polynomial functions (spline functions) that have least deviation from zero in the metric of C. This has allowed us to obtain quadrature formulas with least estimate of the remainder on a number of classes of differentiable functions.
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