Convolution – its properties from Fubini–Tonelli, smoothing, and approximate identities.
The transform – injectivity, the Riemann–Lebesgue lemma, inversion, and Fourier coefficients.
Convolution – its properties from Fubini–Tonelli, smoothing, and approximate identities.
The transform – injectivity, the Riemann–Lebesgue lemma, inversion, and Fourier coefficients.