Question

Evaluate the DFT of the vector $(f(x_0),\dots,f(x_{18}),f(x_{19}))$

score 59 · Answer 1 · 2014-11-03 19:47:25

59

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Evaluate the DFT of the vector $(f(x_0),\dots,f(x_{18}),f(x_{19}))$

Published on 03 Nov 2014 - 19:47

score 49 · Answer 2 · 2014-11-04 08:52:56

49

Views

Space of multipliers on $C_0(\mathbb{R})$?

Published on 04 Nov 2014 - 8:52

score 1.7k · Answer 3 · 2014-11-04 15:21:32

1.7k

Views

How to prove that cosine squared is a positive-definite function?

Published on 04 Nov 2014 - 15:21

score 162 · Answer 4 · 2014-11-04 16:06:13

162

Views

Smoothness of Fourier transform of a measure

Published on 04 Nov 2014 - 16:06

score 62 · Answer 5 · 2014-11-04 18:15:26

62

Views

Calculate difficult Fourier Transform

Published on 04 Nov 2014 - 18:15

score 30 · Answer 6 · 2014-11-04 20:38:40

Why is the following Fourier-operation, involving $\mathcal{F(\delta)}$ and $\mathcal{F(\frac{dq}{dt})}$ legitimate?

score 51 · Answer 7 · 2026-04-01 11:49:38

51

Views

differential quotient in Sobolev space by Fourier transform

Published on 01 Apr 2026 - 11:49

score 385 · Answer 8 · 2026-04-08 18:34:57

385

Views

How to write a fourier series using periodic boundary conditions

Published on 08 Apr 2026 - 18:34

score 2.5k · Answer 9 · 2026-03-28 08:36:33

2.5k

Views

How to use the Spectral Theorem to Derive $L^{2}(\mathbb{R})$ Fourier Transform Theory

Published on 28 Mar 2026 - 8:36

score 977 · Answer 10 · 2014-11-05 17:02:12

977

Views

Can Polynomials be positive definite?

Published on 05 Nov 2014 - 17:02

score 329 · Answer 11 · 2014-11-05 22:35:45

329

Views

Showing that $-4\pi^2\sum_{m=1}^\infty me^{2\pi i m\tau}=\frac{\pi^2}{\sin^2(\pi \tau)}$

Published on 05 Nov 2014 - 22:35

score 62 · Answer 12 · 2014-11-05 23:22:53

62

Views

Regarding a theorem of S.Bochner

Published on 05 Nov 2014 - 23:22

score 114 · Answer 13 · 2014-11-06 00:30:46

114

Views

Expressing solution of this wave equation problem in different Fourier expansion

Published on 06 Nov 2014 - 0:30

score 159 · Answer 14 · 2026-03-25 23:11:05

159

Views

The Fourier Transform on Schwartz Space: concerns about $-2\pi ixf(x)\longrightarrow \frac{d}{d\xi}\hat f(\xi)$

Published on 25 Mar 2026 - 23:11

score 1.2k · Answer 15 · 2014-11-06 06:49:50

1.2k

Views

Problem on Big Rudin about Fourier Transform

Published on 06 Nov 2014 - 6:49

List Question

Evaluate the DFT of the vector $(f(x_0),\dots,f(x_{18}),f(x_{19}))$

Space of multipliers on $C_0(\mathbb{R})$?

How to prove that cosine squared is a positive-definite function?

Smoothness of Fourier transform of a measure

Calculate difficult Fourier Transform

Why is the following Fourier-operation, involving $\mathcal{F(\delta)}$ and $\mathcal{F(\frac{dq}{dt})}$ legitimate?

differential quotient in Sobolev space by Fourier transform

How to write a fourier series using periodic boundary conditions

How to use the Spectral Theorem to Derive $L^{2}(\mathbb{R})$ Fourier Transform Theory

Can Polynomials be positive definite?

Showing that $-4\pi^2\sum_{m=1}^\infty me^{2\pi i m\tau}=\frac{\pi^2}{\sin^2(\pi \tau)}$

Regarding a theorem of S.Bochner

Expressing solution of this wave equation problem in different Fourier expansion

The Fourier Transform on Schwartz Space: concerns about $-2\pi ixf(x)\longrightarrow \frac{d}{d\xi}\hat f(\xi)$

Problem on Big Rudin about Fourier Transform

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