Geodesic
On interpolation by almost trigonometric splines
Ural mathematical journal, Tome 3 (2017) no. 2, pp. 67-73 Cet article a éte moissonné depuis la source Math-Net.Ru

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The existence and uniqueness of an interpolating periodic spline defined on an equidistant mesh by the linear differential operator $\mathcal{L}_{2n+2}(D)=D^{2}(D^{2}+1^{2})(D^{2}+2^{2})\cdots (D^{2}+n^{2})$ with $n\in\mathbb{N}$ are reproved under the final restriction on the step of the mesh. Under the same restriction, sharp estimates of the error of approximation by such interpolating periodic splines are obtained.
Keywords: Splines, Approximation, Linear differential operator.
Mots-clés : Interpolation 
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Sergey I. Novikov. On interpolation by almost trigonometric splines. Ural mathematical journal, Tome 3 (2017) no. 2, pp. 67-73. http://geodesic.mathdoc.fr/item/UMJ_2017_3_2_a8/

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