Geodesic
Sharp Estimates of the Error of Interpolation by Bilinear Splines for Some Classes of Functions
Matematičeskie zametki, Tome 102 (2017) no. 3, pp. 462-469 Cet article a éte moissonné depuis la source Math-Net.Ru

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For some classes of functions of two variables defined by their moduli of continuity, sharp upper bounds for the approximation of functions by interpolation bilinear splines are obtained.
Keywords: bilinear interpolation spline, modulus of continuity, Steklov function. 
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M. Sh. Shabozov; S. N. Mekhmonzoda. Sharp Estimates of the Error of Interpolation by Bilinear Splines for Some Classes of Functions. Matematičeskie zametki, Tome 102 (2017) no. 3, pp. 462-469. http://geodesic.mathdoc.fr/item/MZM_2017_102_3_a10/

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