### Comparison theorems for derivatives and some of their applications

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Babenko V.F., Kofanov V.A., Pichugov S.A. "Comparison of rearrangement and Kolmogorov-Nagy type inequalities for periodic functions", *Approximation theory: A volume dedicated to Blagovest Sendov* (B. Bojanov, ed.), Darba, Sofia, 2002; pp. 24-53.

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DOI: https://doi.org/10.15421/241204

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