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On Estimates of the Kolmogorov Widths of the Classes B_{p,\theta}^r in the Space L_q

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Estimates of the Best M-Term Trigonometric Approximations of the Classes L, p of Periodic Functions of Many Variables in the Space Lq

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Ukrainian Mathematical Journal, Vol. 52, Iss. 7, 2000-07 ,pp. : 1029-1039

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Approximation characteristics of the classes B p, Ω of periodic functions of many variables

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Ukrainian Mathematical Journal, Vol. 58, Iss. 5, 2006-05 ,pp. : 779-793

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Linear widths of the classes B p, Ω of periodic functions of many variables in the space L q

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