Geodesic
Approximation of Smooth Functions and Constants by Polynomials with Integer and Natural Coefficients
Matematičeskie zametki, Tome 70 (2001) no. 1, pp. 123-136

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

Direct theorems on the approximation of smooth functions by polynomials with integer coefficients are strengthened. First theorems on approximation by polynomials with natural coefficients are obtained. 
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     author = {R. M. Trigub},
     title = {Approximation of {Smooth} {Functions} and {Constants} by {Polynomials} with {Integer} and {Natural} {Coefficients}},
     journal = {Matemati\v{c}eskie zametki},
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     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_1_a13/}
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R. M. Trigub. Approximation of Smooth Functions and Constants by Polynomials with Integer and Natural Coefficients. Matematičeskie zametki, Tome 70 (2001) no. 1, pp. 123-136. http://geodesic.mathdoc.fr/item/MZM_2001_70_1_a13/