List questions from fourier-analysis

Published on 12 Apr 2026 - 1:59

130

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Using Discrete Fourier trasform of the samples of a continuous/periodic signal to obtain frequency data similar to FT of the original signal

Published on 16 Apr 2026 - 8:42

108

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Fourier transform of a real white noise on a 3D cubic lattice

Published on 11 Apr 2026 - 6:39

275

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Proving that the Gaussian is the minimizer of Heisenberg's uncertainty product via variational calculus techniques

Published on 14 Apr 2026 - 8:01

68

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How to prove this simple fact without using distribution theory?

Published on 09 Apr 2026 - 6:00

231

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Why are discrete-time Fourier series and discrete Fourier transform only defined on integer $k$?

Published on 14 Apr 2026 - 3:16

364

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If a signal is periodic, can the error of approximation by Discrete Fourier Transform be avoided when using finite number of samples?

Published on 13 Apr 2026 - 12:54

122

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Sign mistake in Fourier transform of $\frac{x}{1+x^2}$.

Published on 16 Apr 2026 - 2:19

92

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Fourier transform doubting factorization

Published on 11 Apr 2026 - 13:01

123

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DFT by $n$ samples of a continuous periodic signal with more than $n$ frequencies

Published on 15 Apr 2026 - 3:33

56

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Help with Homework Problem for Img Processing class

Published on 17 Apr 2026 - 15:28

25.7k

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Fourier Series Representation $e^{ax}$

Published on 12 Apr 2026 - 1:59

1.4k

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Calculate Distance between Fourier Transforms

Published on 12 Apr 2026 - 0:56

107

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Using dummy variable to derive Nth partial Fourier sum

Published on 15 Apr 2026 - 11:53

94

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If f is continuous and f $\in$ L1 then $\lim_{\tau\to \tau_0} \Vert f_\tau-f_{\tau_0}\Vert_{L_1}$ = $0$?

Published on 14 Apr 2026 - 21:28

List Question

Fourier Series estimation

Using Discrete Fourier trasform of the samples of a continuous/periodic signal to obtain frequency data similar to FT of the original signal

Fourier transform of a real white noise on a 3D cubic lattice

Proving that the Gaussian is the minimizer of Heisenberg's uncertainty product via variational calculus techniques

How to prove this simple fact without using distribution theory?

Why are discrete-time Fourier series and discrete Fourier transform only defined on integer $k$?

If a signal is periodic, can the error of approximation by Discrete Fourier Transform be avoided when using finite number of samples?

Sign mistake in Fourier transform of $\frac{x}{1+x^2}$.

Fourier transform doubting factorization

DFT by $n$ samples of a continuous periodic signal with more than $n$ frequencies

Help with Homework Problem for Img Processing class

Fourier Series Representation $e^{ax}$

Calculate Distance between Fourier Transforms

Using dummy variable to derive Nth partial Fourier sum

If f is continuous and f $\in$ L1 then $\lim_{\tau\to \tau_0} \Vert f_\tau-f_{\tau_0}\Vert_{L_1}$ = $0$?

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