Question

Real positive index Sobolev spaces are Hilbert spaces

score 153 · Answer 1 · 2019-01-07 18:55:56

153

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Real positive index Sobolev spaces are Hilbert spaces

Published on 07 Jan 2019 - 18:55

score 217 · Answer 2 · 2026-03-25 18:48:12

217

Views

Convergence in Schwartz Space of Fourier transforms?

Published on 25 Mar 2026 - 18:48

score 61 · Answer 3 · 2026-03-26 04:36:49

61

Views

I am evaluating the fourier transform of a function + a constant: $\frac{1}{2\pi}\int_{-\infty}^{+\infty}(f(x)+c)e^{-ikx}dx$ equals what?

Published on 26 Mar 2026 - 4:36

score 3.9k · Answer 4 · 2026-03-25 19:03:58

3.9k

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What is meant by "symplectic Fourier transform"?

Published on 25 Mar 2026 - 19:03

score 317 · Answer 5 · 2019-01-10 20:53:33

317

Views

Fourier transform of a convolution of measures

Published on 10 Jan 2019 - 20:53

score 101 · Answer 6 · 2019-01-11 17:45:31

101

Views

Inverse Fourier transform of $\frac{\sin(a\omega)}{(\omega-a)^2}^2$.

Published on 11 Jan 2019 - 17:45

score 41 · Answer 7 · 2019-01-12 20:10:35

If $f\in L^1(\mathbb{R})$ and $M>0$ is it true that $\mathcal{F}\left( \chi_{[-M,M]}\mathcal{F}(f) \right)\in L^1(\mathbb{R})$?

score 1.1k · Answer 8 · 2026-03-25 22:03:53

1.1k

Views

DTFT (Discrete Time Fourier Transform) duality property applied to cos / sin

Published on 25 Mar 2026 - 22:03

score 814 · Answer 9 · 2019-01-12 21:18:58

814

Views

If the Fourier transform of f(x) is G(w), then what is the inverse Fourier transform of f(w)?

Published on 12 Jan 2019 - 21:18

score 248 · Answer 10 · 2019-01-12 22:33:44

248

Views

Fourier transform to solve $\int_{- \infty}^{+\infty}\frac{\sin^3(x)}{x^3}\,dx$

Published on 12 Jan 2019 - 22:33

score 547 · Answer 11 · 2019-01-13 03:58:08

547

Views

Calculating DCT with DFT

Published on 13 Jan 2019 - 3:58

score 525 · Answer 12 · 2026-03-25 22:03:19

525

Views

How to deduce Fourier / Z transform from Laplace transform through a CAS-Calculator.

Published on 25 Mar 2026 - 22:03

score 244 · Answer 13 · 2019-01-13 20:22:44

244

Views

Computing the Fourier transform of $\cos(x/2)$

Published on 13 Jan 2019 - 20:22

score 110 · Answer 14 · 2026-03-28 06:00:58

110

Views

Convergence of $L^2$ functions with conditions on their Fourier transforms

Published on 28 Mar 2026 - 6:00

score 136 · Answer 15 · 2019-01-15 19:53:50

136

Views

Compactly supported $f \in L^1$. Then $\hat f$ can be extended to an holomorphic function on $\mathbb C$

Published on 15 Jan 2019 - 19:53

List Question

Real positive index Sobolev spaces are Hilbert spaces

Convergence in Schwartz Space of Fourier transforms?

I am evaluating the fourier transform of a function + a constant: $\frac{1}{2\pi}\int_{-\infty}^{+\infty}(f(x)+c)e^{-ikx}dx$ equals what?

What is meant by "symplectic Fourier transform"?

Fourier transform of a convolution of measures

Inverse Fourier transform of $\frac{\sin(a\omega)}{(\omega-a)^2}^2$.

If $f\in L^1(\mathbb{R})$ and $M>0$ is it true that $\mathcal{F}\left( \chi_{[-M,M]}\mathcal{F}(f) \right)\in L^1(\mathbb{R})$?

DTFT (Discrete Time Fourier Transform) duality property applied to cos / sin

If the Fourier transform of f(x) is G(w), then what is the inverse Fourier transform of f(w)?

Fourier transform to solve $\int_{- \infty}^{+\infty}\frac{\sin^3(x)}{x^3}\,dx$

Calculating DCT with DFT

How to deduce Fourier / Z transform from Laplace transform through a CAS-Calculator.

Computing the Fourier transform of $\cos(x/2)$

Convergence of $L^2$ functions with conditions on their Fourier transforms

Compactly supported $f \in L^1$. Then $\hat f$ can be extended to an holomorphic function on $\mathbb C$

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