Abstract
For a functionf(x) ∈ H rω , defined on a uniform grid approximately, we propose a stable method for approximately restoring the function with the aid of polynomial splines. We derive uniform estimates for the deviations of the spline and its derivatives from the function and its derivatives.
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Translated from Matematicheskie Zametki, Vol. 16, No. 4, pp. 537–544, October, 1974.
The author thanks Yu. N. Subbotin for his statement of the problem and a discussion of the results.
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Pakhnutov, I.A. Stability of spline approximation and the restoration of grid functions. Mathematical Notes of the Academy of Sciences of the USSR 16, 910–914 (1974). https://doi.org/10.1007/BF01104254
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DOI: https://doi.org/10.1007/BF01104254