List questions from fourier-analysis

Published on 27 Mar 2026 - 1:14

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trigonometric interpolation of a sampled signal

Published on 26 Mar 2026 - 19:05

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Easiest way to prove integral of $e^{ikx}$ is $\delta(k)$

Published on 21 May 2014 - 9:53

263

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Problem about average of cos square (nt) where n is arbitrary

Published on 26 Mar 2026 - 19:05

108

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intuition behind inverse transform of $ cos(\omega_{0} t)$

Published on 22 May 2014 - 0:29

89

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Fourier transform of $|u|^2*u$

Published on 22 May 2014 - 7:42

652

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Symbol of self-adjoint pseudodifferential operator

Published on 30 Mar 2026 - 16:13

167

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Inverse Fourier Transform

Published on 30 Mar 2026 - 23:20

83

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Showing that the set $\displaystyle \{e^{2\pi i (mx+ny)}\}_{n,m=-\infty}^\infty$ is an orthonormal set

Published on 04 Apr 2026 - 3:53

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Meaning of multiplication by $\sin$ in $\omega$-domain

Published on 26 Mar 2026 - 8:03

330

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Formula for trace of particular operators

Published on 27 Mar 2026 - 21:54

87

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Can't extract odd function with FFT

Published on 25 Mar 2026 - 12:47

339

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Representing a real sampled signal with N samples as a complex sampled signal with N/2 samples

Published on 26 Mar 2026 - 20:39

1.3k

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Convolution of a sum of shifted delta functions

Published on 26 May 2014 - 14:23

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Prove $\sum_{n= -\infty}^{\infty} \frac{1}{(t+n)^2} = \frac{\pi^2 }{\sin^2(\pi t)}$ using $f(x)=\max (1-|x|,0)$ and Poisson summation formula

Published on 27 May 2014 - 7:28

List Question

Characteristic Function Inversion

trigonometric interpolation of a sampled signal

Easiest way to prove integral of $e^{ikx}$ is $\delta(k)$

Problem about average of cos square (nt) where n is arbitrary

intuition behind inverse transform of $ cos(\omega_{0} t)$

Fourier transform of $|u|^2*u$

Symbol of self-adjoint pseudodifferential operator

Inverse Fourier Transform

Showing that the set $\displaystyle \{e^{2\pi i (mx+ny)}\}_{n,m=-\infty}^\infty$ is an orthonormal set

Meaning of multiplication by $\sin$ in $\omega$-domain

Formula for trace of particular operators

Can't extract odd function with FFT

Representing a real sampled signal with N samples as a complex sampled signal with N/2 samples

Convolution of a sum of shifted delta functions

Prove $\sum_{n= -\infty}^{\infty} \frac{1}{(t+n)^2} = \frac{\pi^2 }{\sin^2(\pi t)}$ using $f(x)=\max (1-|x|,0)$ and Poisson summation formula

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