Question

What is difference between Fourier Transform and Fast Fourier Transform?

score 29.5k · Answer 1 · 2026-03-25 06:00:28

29.5k

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What is difference between Fourier Transform and Fast Fourier Transform?

Published on 25 Mar 2026 - 6:00

score 962 · Answer 2 · 2014-07-10 15:50:52

962

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Fourier transform of a derivative

Published on 10 Jul 2014 - 15:50

score 42 · Answer 3 · 2014-07-10 18:26:46

42

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Is this a Fourier transformation?

Published on 10 Jul 2014 - 18:26

score 123 · Answer 4 · 2026-04-04 16:35:14

123

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asymptotical behavior of integral

Published on 04 Apr 2026 - 16:35

score 33 · Answer 5 · 2014-07-13 23:39:53

33

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Let $f(x)=(1+|x|^2)^{-a}$, with $x\in \Bbb R^n$ and $a>0$.

Published on 13 Jul 2014 - 23:39

score 432 · Answer 6 · 2026-04-01 00:26:52

432

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$\widehat{f\ast g}= \hat{f} \cdot \hat{g}$ for $f, \hat{f} \in L^{p}(\mathbb R)\cap C(\mathbb R) (1<p<\infty, p\neq 2), g\in \mathcal{S}(\mathbb R)$?

Published on 01 Apr 2026 - 0:26

score 7.3k · Answer 7 · 2014-07-14 21:12:59

7.3k

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How to interpret the imaginary part of an inverse fourier transform

Published on 14 Jul 2014 - 21:12

score 228 · Answer 8 · 2026-03-25 20:12:46

228

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To What Extent is the Fourier Inversion Theorem Due to the Self-Adjointedness of the Laplacian

Published on 25 Mar 2026 - 20:12

score 692 · Answer 9 · 2026-03-30 02:04:05

692

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Relative error when computing derivatives via FFT

Published on 30 Mar 2026 - 2:04

score 98 · Answer 10 · 2014-07-15 03:00:21

98

Views

The definition of spectral density of stationary process through Fourier transform

Published on 15 Jul 2014 - 3:00

score 166 · Answer 11 · 2014-07-15 19:47:23

166

Views

Estimate involving almost orthogonality

Published on 15 Jul 2014 - 19:47

score 98 · Answer 12 · 2026-03-30 10:43:11

98

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$\lim_{s\to 0^+}\int_0^\infty a(t) e^{-st} dt $

Published on 30 Mar 2026 - 10:43

score 186 · Answer 13 · 2026-03-25 14:27:14

186

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Top and bottom power spectral density of a height profile

Published on 25 Mar 2026 - 14:27

score 164 · Answer 14 · 2014-07-16 08:48:53

164

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Given Tf(x), find the equivalent operator m(k)f^(k) in the Fourier transform sense.

Published on 16 Jul 2014 - 8:48

score 4.7k · Answer 15 · 2026-03-31 10:04:26

4.7k

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Interpreting Fourier transform frequency graph

Published on 31 Mar 2026 - 10:04

List Question

What is difference between Fourier Transform and Fast Fourier Transform?

Fourier transform of a derivative

Is this a Fourier transformation?

asymptotical behavior of integral

Let $f(x)=(1+|x|^2)^{-a}$, with $x\in \Bbb R^n$ and $a>0$.

$\widehat{f\ast g}= \hat{f} \cdot \hat{g}$ for $f, \hat{f} \in L^{p}(\mathbb R)\cap C(\mathbb R) (1<p<\infty, p\neq 2), g\in \mathcal{S}(\mathbb R)$?

How to interpret the imaginary part of an inverse fourier transform

To What Extent is the Fourier Inversion Theorem Due to the Self-Adjointedness of the Laplacian

Relative error when computing derivatives via FFT

The definition of spectral density of stationary process through Fourier transform

Estimate involving almost orthogonality

$\lim_{s\to 0^+}\int_0^\infty a(t) e^{-st} dt $

Top and bottom power spectral density of a height profile

Given Tf(x), find the equivalent operator m(k)f^(k) in the Fourier transform sense.

Interpreting Fourier transform frequency graph

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