Sur un théorème de Tiberiu Popoviciu
On a theorem of Tiberiu Popoviciu
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Popoviciu, Tiberiu, Notes sur les fonctions convexes d'ordre supérieur. IX. Inégalités linéaires et bilinéaires entre les fonctions convexes. Quelques généralisations d'une inégalité de Tchebycheff. (French) Bull. Math. Soc. Roumaine Sci. 43, (1941). 85-141, MR0013170.
Popoviciu, Tiberiu, Sur une généralisation des fonctions "Spline", Mathematical Structures-Computational mathematics-Mathematical Modelling, (Sofia), 405-410, (1975).
Popoviciu, Tiberiu, Despre cea mai bună aproximaţie a funcţiilor continue prin polinoame, Cluj 1937 (in Romanian).
Popoviciu, Elena, Analiză matematică, Curst litografiat, 1974 (in Romanian).
Bojanic, R., Roulier, J., Approximation of convex functions by convex splines and convexity preserving continuous linear operators. Rev. Anal. Numér. Théorie Approximation 3 (1974), no. 2, 143-150 (1975), MR0377354.
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