Geodesic
$K$-functionals and exact values of $n$-widths of some classes in~$L_2$
Matematičeskie zametki, Tome 66 (1999) no. 4, pp. 494-499.

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

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S. B. Vakarchuk. $K$-functionals and exact values of $n$-widths of some classes in~$L_2$. Matematičeskie zametki, Tome 66 (1999) no. 4, pp. 494-499. http://geodesic.mathdoc.fr/item/MZM_1999_66_4_a1/

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