Best Bilinear Approximations for the Classes of Functions of Many Variables
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We obtain upper bounds for the values of the best bilinear approximations in the Lebesgue spaces of periodic functions of many variables from the Besov-type classes. In special cases, it is shown that these bounds are order exact.
KeywordsPeriodic Function Trigonometric Polynomial Lebesgue Space Order Exact Bilinear Approximation
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