Geodesic
Approximate recovery of periodic functions of several variables
Sbornik. Mathematics, Tome 56 (1987) no. 1, pp. 249-261

Voir la notice de l'article provenant de la source Math-Net.Ru

A linear method is constructed for recovery of functions with bounded mixed difference from values at a fixed number of points. The method gives a recovery error close to the corresponding Kolmogorov width of the class of functions with bounded mixed difference. Bibliography: 13 titles. 
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     author = {V. N. Temlyakov},
     title = {Approximate recovery of periodic functions of several variables},
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V. N. Temlyakov. Approximate recovery of periodic functions of several variables. Sbornik. Mathematics, Tome 56 (1987) no. 1, pp. 249-261. http://geodesic.mathdoc.fr/item/SM_1987_56_1_a14/