functional analysis

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• \Bibitem{1} \by Bokayev N.A., Gogatishvili A, Abek A.N. \paper On estimates of non-increasing rearrangement of generalized fractional maximal function \paperinfo We give a sharp pointwise estimates of the non-increasing rearrangement of the generalized fractional maximal function (MΦf)(x) via an expression involving the non-increasing rearrangement of f. It is shown that the obtained estimate is more sharp than the inequality which is followed from the estimate for the generalized Riesz potential. \jour Eurasian Mathematical Journal \yr 2023 \vol 14 \issue 2 \pages 13-23
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• Eurasian National University named after L.N. Gumilyov, Astana