Abstract
It is proved that the modulus of continuity of a function in Lp(0, 1) majorizes the modulus of continuity of its decreasing rearrangement.
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Translated from Matematicheskii Zametki, Vol. 18, No. 1, pp. 63–66, July, 1975.
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Brudnyi, Y.A. Moduli of continuity and rearrangements. Mathematical Notes of the Academy of Sciences of the USSR 18, 619–621 (1975). https://doi.org/10.1007/BF01461142
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DOI: https://doi.org/10.1007/BF01461142