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Sharp constants in the Hardy-Littlewood-Sobolev and related inequalities. (English) Zbl 0527.42011

MSC:
42B25 Maximal functions, Littlewood-Paley theory
26D15 Inequalities for sums, series and integrals
42B10 Fourier and Fourier-Stieltjes transforms and other transforms of Fourier type
42A85 Convolution, factorization for one variable harmonic analysis
42A05 Trigonometric polynomials, inequalities, extremal problems
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