Geodesic
Integral Norms of Trigonometric Polynomials
Matematičeskie zametki, Tome 70 (2001) no. 2, pp. 308-315 
V. A. Yudin. Integral Norms of Trigonometric Polynomials. Matematičeskie zametki, Tome 70 (2001) no. 2, pp. 308-315. http://geodesic.mathdoc.fr/item/MZM_2001_70_2_a13/
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     title = {Integral {Norms} of {Trigonometric} {Polynomials}},
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Voir la notice de l'article provenant de la source Math-Net.Ru

For trigonometric polynomials with coefficients equal to 1 or 0 in absolute value whose spectra are located on the left-hand side of binary blocks, we establish two-sided estimates of the $L_1$-norm.

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