 Riemann–Lebesgue lemma (source code)

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= Riemann–Lebesgue lemma
{wiki=Riemann–Lebesgue_lemma}

The Riemann–Lebesgue lemma is a fundamental result in Fourier analysis, dealing with the behavior of the Fourier coefficients of integrable functions. It asserts that if \\( f \\) is an integrable function on the real line (or on a finite interval), then the Fourier coefficients of \\( f \\) tend to zero as the frequency goes to infinity.

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