List questions from fourier-analysis

Published on 12 Apr 2026 - 5:41

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fourier series and bessel inequality correlation

Published on 11 Apr 2026 - 5:32

126

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Fourier Transforms for characteristic functions

Published on 09 Apr 2026 - 22:33

118

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How to calculate this infinite summation including cos()? Does Parseval Identity work for it?

Published on 26 Mar 2026 - 23:09

364

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Laplace and Fourier Transforms to derive an Unsteady Fundamental Solution

Published on 11 Apr 2026 - 0:34

588

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Non Linear ODE - Fourier Transform

Published on 25 Mar 2026 - 11:17

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Convergence on locally compact groups with an additional condition

Published on 09 Apr 2026 - 16:28

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Calculating Fourier Transform of Sech(x)

Published on 26 Mar 2026 - 16:05

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Deriving Fourier transform of differentiation into multiplication

Published on 10 Apr 2026 - 22:33

87

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Bias of a halfspace after setting a coordinate

Published on 12 Apr 2026 - 1:56

26

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Prove $8\int_{-\infty}^{\infty}\Delta_a(x)\Delta_b(x)\ dx=\int_{-\infty}^{\infty}\left(\Delta_{b>a}(x)\right)^2\ dx$ for every $b\geq a>0$

Published on 31 Mar 2026 - 23:54

344

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Do the Fourier coefficients imply the smoothness of the function?

Published on 13 Apr 2026 - 0:07

175

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Fourier transform with convolution

Published on 09 Apr 2026 - 4:49

314

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Let $f(x)$ be the $2π$-periodic function defined by $ f(x)= \begin{cases} 1+x&\,x \in \mathbb [0,π)\\ -x-2&\, x \in \mathbb [-π,0)\\ \end{cases} $

Published on 12 Apr 2026 - 4:23

27

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About this Wikipedia derivation of relation between samples of a function and samples of its Fourier transform.

Published on 11 Apr 2026 - 9:26

List Question

Fourier transform and convolution product

fourier series and bessel inequality correlation

Fourier Transforms for characteristic functions

How to calculate this infinite summation including cos()? Does Parseval Identity work for it?

Laplace and Fourier Transforms to derive an Unsteady Fundamental Solution

Non Linear ODE - Fourier Transform

Convergence on locally compact groups with an additional condition

Calculating Fourier Transform of Sech(x)

Deriving Fourier transform of differentiation into multiplication

Bias of a halfspace after setting a coordinate

Prove $8\int_{-\infty}^{\infty}\Delta_a(x)\Delta_b(x)\ dx=\int_{-\infty}^{\infty}\left(\Delta_{b>a}(x)\right)^2\ dx$ for every $b\geq a>0$

Do the Fourier coefficients imply the smoothness of the function?

Fourier transform with convolution

Let $f(x)$ be the $2π$-periodic function defined by $ f(x)= \begin{cases} 1+x&\,x \in \mathbb [0,π)\\ -x-2&\, x \in \mathbb [-π,0)\\ \end{cases} $

About this Wikipedia derivation of relation between samples of a function and samples of its Fourier transform.

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