Question

Order of an operator given by a Fourier multiplier

score 40 · Answer 1 · 2026-04-14 02:04:03

40

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Order of an operator given by a Fourier multiplier

Published on 14 Apr 2026 - 2:04

score 144 · Answer 2 · 2026-04-13 04:15:27

144

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A question about Fourier multipliers

Published on 13 Apr 2026 - 4:15

score 1.4k · Answer 3 · 2026-04-11 18:57:13

1.4k

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What is the big O of the real fast Fourier transform

Published on 11 Apr 2026 - 18:57

score 41 · Answer 4 · 2026-04-08 23:31:47

41

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Is it possible to get a frequency equation from limited power expansion of differential equation solution?

Published on 08 Apr 2026 - 23:31

score 145 · Answer 5 · 2026-04-24 03:44:35

145

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Laplace Transform - what does s-domain represent?

Published on 24 Apr 2026 - 3:44

score 731 · Answer 6 · 2026-04-16 12:07:40

731

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The Fourier transform of $e^{-2\pi|x|}$ for $x\in\mathbb{R}^d$.

Published on 16 Apr 2026 - 12:07

score 121 · Answer 7 · 2026-04-09 13:38:21

121

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Evaluate in close form $\sum_{{n}=\mathbf{1}}^{\infty} \frac{\cos (\boldsymbol{\eta} \boldsymbol{n})}{\boldsymbol{n}^{2}+\boldsymbol{b}^{2}}$

Published on 09 Apr 2026 - 13:38

score 84 · Answer 8 · 2026-04-16 12:44:15

84

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Multiplication by a simple function and compactly supported inverse Fourier transform

Published on 16 Apr 2026 - 12:44

score 124 · Answer 9 · 2026-04-15 02:37:15

124

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computing $\int_{-\infty}^{\infty} x e^{itx} dx$ using Cauchy Theorem and gamma function rapresentation

Published on 15 Apr 2026 - 2:37

score 142 · Answer 10 · 2026-04-14 03:00:12

142

Views

How to calculate an inverse Fourier transform of product $\operatorname{rect}(f)$ with $\frac{1}{f+K}$?

Published on 14 Apr 2026 - 3:00

score 44 · Answer 11 · 2026-04-13 12:24:28

44

Views

reference request: Borel measure is Gaussian iff Fourier transform involves positive definite bilinear form

Published on 13 Apr 2026 - 12:24

score 62 · Answer 12 · 2026-03-25 20:34:56

62

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Which permutation matrix is this diagonal matrix similar to?

Published on 25 Mar 2026 - 20:34

score 423 · Answer 13 · 2026-04-09 12:29:34

423

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Fourier Transform of a harmonic polynomial

Published on 09 Apr 2026 - 12:29

score 53 · Answer 14 · 2026-04-12 01:25:47

53

Views

How should I finish this by completing to square?

Published on 12 Apr 2026 - 1:25

score 57 · Answer 15 · 2026-04-16 06:34:44

57

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S. Weinberg, “The Quantum theory of fields: Foundations” (1995), Eq. (9.2.15)

Published on 16 Apr 2026 - 6:34

List Question

Order of an operator given by a Fourier multiplier

A question about Fourier multipliers

What is the big O of the real fast Fourier transform

Is it possible to get a frequency equation from limited power expansion of differential equation solution?

Laplace Transform - what does s-domain represent?

The Fourier transform of $e^{-2\pi|x|}$ for $x\in\mathbb{R}^d$.

Evaluate in close form $\sum_{{n}=\mathbf{1}}^{\infty} \frac{\cos (\boldsymbol{\eta} \boldsymbol{n})}{\boldsymbol{n}^{2}+\boldsymbol{b}^{2}}$

Multiplication by a simple function and compactly supported inverse Fourier transform

computing $\int_{-\infty}^{\infty} x e^{itx} dx$ using Cauchy Theorem and gamma function rapresentation

How to calculate an inverse Fourier transform of product $\operatorname{rect}(f)$ with $\frac{1}{f+K}$?

reference request: Borel measure is Gaussian iff Fourier transform involves positive definite bilinear form

Which permutation matrix is this diagonal matrix similar to?

Fourier Transform of a harmonic polynomial

How should I finish this by completing to square?

S. Weinberg, “The Quantum theory of fields: Foundations” (1995), Eq. (9.2.15)

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