"Erratum to: Sharp Constant in Jackson’s Inequality with Modulus of Smoothness for Uniform Approximations of Periodic Functions"

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My paper contains an error. Namely, inequality (9) does not hold. For example, for k = 2,I do not know whether the error in the argument can be corrected and… Click to show full abstract

My paper contains an error. Namely, inequality (9) does not hold. For example, for k = 2,I do not know whether the error in the argument can be corrected and whether the main result of the paper is valid.I wish to express gratitude to O. L. Vinogradov for pointing out the error.

Keywords: constant jackson; sharp constant; erratum sharp; jackson inequality; inequality; inequality modulus

Journal Title: Mathematical Notes
Year Published: 2018

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