An exact estimate for approximation of a class of convex functions by Szasz-Mirakian operators in L_1 norm
Δελτίο της Ελληνικής Μαθηματικής Εταιρίας , Tome 34 (1992), p. 5-12.

Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library

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     author = {V. A. Kostova},
     title = {An exact estimate for approximation of a class of convex functions by {Szasz-Mirakian} operators in {L_1} norm},
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},
     pages = {5-12},
     publisher = {mathdoc},
     volume = {34},
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V. A. Kostova. An exact estimate for approximation of a class of convex functions by Szasz-Mirakian operators in L_1 norm. Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
, Tome 34 (1992), p. 5-12. http://geodesic.mathdoc.fr/item/DEME_1992__34_a1/