Question

What category of math does the Fourier Transform fall into?

score 1k · Answer 1 · 2026-04-12 10:30:09

1k

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What category of math does the Fourier Transform fall into?

Published on 12 Apr 2026 - 10:30

score 142 · Answer 2 · 2026-04-09 15:24:53

142

Views

Obtain the $N$-point IDFT of $X(k)=\frac{3}{5-4 \cos \left(2 \pi \frac{k}{N}\right)}$

Published on 09 Apr 2026 - 15:24

score 142 · Answer 3 · 2026-04-12 02:51:03

142

Views

Analytic Solution for Second-Order Nonlinear PDE?

Published on 12 Apr 2026 - 2:51

score 150 · Answer 4 · 2026-04-16 21:12:45

150

Views

Show that Haar Wavelet is admissible?

Published on 16 Apr 2026 - 21:12

score 95 · Answer 5 · 2026-04-09 17:43:01

95

Views

How to extend the 1-d z-transform, describing a function on the unit circle, to two dimensions to describe a function on the unit sphere?

Published on 09 Apr 2026 - 17:43

score 293 · Answer 6 · 2026-04-13 10:28:54

293

Views

Expand the function $f (x)=\sin(\frac{3}{x})$ in Fourier series on the interval $[0,10]$

Published on 13 Apr 2026 - 10:28

score 23 · Answer 7 · 2026-04-11 15:45:07

23

Views

Fourier and its inverse

Published on 11 Apr 2026 - 15:45

score 74 · Answer 8 · 2026-03-25 17:40:17

74

Views

Is there an method similar to FFT for Fractionally Iterated Fourier Transforms?

Published on 25 Mar 2026 - 17:40

score 182 · Answer 9 · 2026-04-12 12:30:42

182

Views

Equivalence of W^{m,p} and H^{s,p} norms

Published on 12 Apr 2026 - 12:30

score 49 · Answer 10 · 2026-04-14 09:38:48

49

Views

Issue evaluating the Fourier Transform of a box function at $ w =0 $

Published on 14 Apr 2026 - 9:38

score 310 · Answer 11 · 2026-04-13 22:00:16

310

Views

Why is it not possible to show that $\frac{d}{dx}e^x=e^x$ by differentiating the Fourier series

Published on 13 Apr 2026 - 22:00

score 44 · Answer 12 · 2026-04-13 10:39:58

44

Views

Can you determine if a measure is finite by looking at its Fourier-Stieltjes transform?

Published on 13 Apr 2026 - 10:39

score 60 · Answer 13 · 2026-04-16 13:37:49

60

Views

Sequence in Schwartz space whose Fourier transform is infinite at some 'spectral point'.

Published on 16 Apr 2026 - 13:37

score 33 · Answer 14 · 2026-04-14 14:28:17

33

Views

Existence of Inverse Fourier Transform of $\mathcal{F}\{\operatorname{sgn}(x)e^{-\alpha|x|}\}$

Published on 14 Apr 2026 - 14:28

score 144 · Answer 15 · 2026-04-13 12:19:31

144

Views

Fourier transform of $f(z)=e^{az}e^{-e^z}$.

Published on 13 Apr 2026 - 12:19

List Question

What category of math does the Fourier Transform fall into?

Obtain the $N$-point IDFT of $X(k)=\frac{3}{5-4 \cos \left(2 \pi \frac{k}{N}\right)}$

Analytic Solution for Second-Order Nonlinear PDE?

Show that Haar Wavelet is admissible?

How to extend the 1-d z-transform, describing a function on the unit circle, to two dimensions to describe a function on the unit sphere?

Expand the function $f (x)=\sin(\frac{3}{x})$ in Fourier series on the interval $[0,10]$

Fourier and its inverse

Is there an method similar to FFT for Fractionally Iterated Fourier Transforms?

Equivalence of W^{m,p} and H^{s,p} norms

Issue evaluating the Fourier Transform of a box function at $ w =0 $

Why is it not possible to show that $\frac{d}{dx}e^x=e^x$ by differentiating the Fourier series

Can you determine if a measure is finite by looking at its Fourier-Stieltjes transform?

Sequence in Schwartz space whose Fourier transform is infinite at some 'spectral point'.

Existence of Inverse Fourier Transform of $\mathcal{F}\{\operatorname{sgn}(x)e^{-\alpha|x|}\}$

Fourier transform of $f(z)=e^{az}e^{-e^z}$.

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