Sharp rate of average decay of the Fourier transform of a bounded set
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🧮 math.CA
keywords
boundedfouriertransformcharacteristicfunctionrateadditionalassumptions
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We prove that the spherical mean of the Fourier transform of the characteristic function of a bounded convex set (without any additional assumptions) or a bounded set with a C^{3/2} boundary decays at infinity at the same rate as the Fourier transform of the characteristic function of the ball.
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