List questions from fourier-transform

Published on 28 Mar 2026 - 0:54

21

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Finding a matrix to use with the discrete fourier transform

Published on 25 Apr 2020 - 19:03

87

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Show that $f$ is a Schwartz function if and only if $|\partial^\alpha \phi(x)| \leq C_{\alpha ,N}(1+|x|)^{-N} $

Published on 26 Mar 2026 - 5:56

50

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2D Discrete Fourier of Piecewise Function

Published on 27 Apr 2020 - 10:45

200

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Prove that $F\in L^1(\mathbb{R})$

Published on 27 Apr 2020 - 12:14

47

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Exponential double integral after use of Fourier transform

Published on 27 Apr 2020 - 13:58

1.8k

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$\delta(ax) = \frac{\delta(x)}{|a|}$, where does absolute value come from?

Published on 27 Apr 2020 - 16:30

44

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Is it possible to have a function that is in $L^{\infty}(T)$ but not in $L^1(T)$?

Published on 26 Mar 2026 - 6:21

2.2k

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Table of 2D and 3D Fourier transforms

Published on 28 Apr 2020 - 10:35

215

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Convolution property of Fourier transform

Published on 28 Mar 2026 - 0:49

417

Views

Behavior of the Fourier Transform at infinity

Published on 28 Apr 2020 - 14:15

127

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Non-homogeneous heat equation using the Fourier transform with a particular term

Published on 27 Mar 2026 - 16:55

67

Views

Vanishing Fourier transform and bounded functions

Published on 26 Mar 2026 - 5:56

48

Views

Confusion regarding Fourier transform of $t$.

Published on 28 Mar 2026 - 13:28

84

Views

Convolution integral with fraction expansion

Published on 25 Mar 2026 - 14:21

List Question

Discrete Fourier Transform Relation between two signals

Finding a matrix to use with the discrete fourier transform

Show that $f$ is a Schwartz function if and only if $|\partial^\alpha \phi(x)| \leq C_{\alpha ,N}(1+|x|)^{-N} $

2D Discrete Fourier of Piecewise Function

Prove that $F\in L^1(\mathbb{R})$

Exponential double integral after use of Fourier transform

$\delta(ax) = \frac{\delta(x)}{|a|}$, where does absolute value come from?

Is it possible to have a function that is in $L^{\infty}(T)$ but not in $L^1(T)$?

Table of 2D and 3D Fourier transforms

Convolution property of Fourier transform

Behavior of the Fourier Transform at infinity

Non-homogeneous heat equation using the Fourier transform with a particular term

Vanishing Fourier transform and bounded functions

Confusion regarding Fourier transform of $t$.

Convolution integral with fraction expansion

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