Geodesic
On exact inequalities of Kolmogorov type
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 9 (2002) no. 3, pp. 412-419 
V. A. Kofanov. On exact inequalities of Kolmogorov type. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 9 (2002) no. 3, pp. 412-419. http://geodesic.mathdoc.fr/item/JMAG_2002_9_3_a8/
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     author = {V. A. Kofanov},
     title = {On exact inequalities of {Kolmogorov} type},
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     year = {2002},
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     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2002_9_3_a8/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

New exact inequalities of Kolmogorov type for periodic functions are obtained. New exact inequalities of Bernstein type for trigonometric polinomials and splines are proved.