Question

Suppose $f$ fulfils a unity condition. Prove $\hat{f}(0)=1$

score 47 · Answer 1 · 2026-04-16 15:54:55

47

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Suppose $f$ fulfils a unity condition. Prove $\hat{f}(0)=1$

Published on 16 Apr 2026 - 15:54

score 146 · Answer 2 · 2026-04-11 04:38:21

146

Views

Fourier transform proof

Published on 11 Apr 2026 - 4:38

score 230 · Answer 3 · 2026-04-17 10:29:39

230

Views

Show that {$\phi (x-n), n\in \Bbb{Z}$} is an orthonormal sequence in $L^2(\Bbb{R})$

Published on 17 Apr 2026 - 10:29

score 580 · Answer 4 · 2026-04-13 17:19:52

580

Views

Find a function whose Fourier transform is the following

Published on 13 Apr 2026 - 17:19

score 425 · Answer 5 · 2026-04-09 21:28:07

425

Views

Fourier transformation of complex exponential proof

Published on 09 Apr 2026 - 21:28

score 195 · Answer 6 · 2026-04-12 22:38:03

195

Views

Choosing which variable to take the Fourier Transform with respect to

Published on 12 Apr 2026 - 22:38

score 54 · Answer 7 · 2026-04-11 21:35:41

54

Views

What would be the Z transform from fourier transform?

Published on 11 Apr 2026 - 21:35

score 39 · Answer 8 · 2026-04-17 10:19:46

39

Views

$e^{t\Delta }f $ grows at the same rate as $[\int f]G_t$ in $L_2$

Published on 17 Apr 2026 - 10:19

score 954 · Answer 9 · 2026-04-16 13:32:31

954

Views

Hankel transform with Bessel functions of the second kind

Published on 16 Apr 2026 - 13:32

score 35 · Answer 10 · 2026-04-11 21:30:46

35

Views

Prove the periodic total variation of f = $\sum_{n=0}^{N-1} |(f*h)[n]|$

Published on 11 Apr 2026 - 21:30

score 509 · Answer 11 · 2026-04-14 08:58:41

509

Views

Find the coefficients of the Fourier series that minimise the error.

Published on 14 Apr 2026 - 8:58

score 599 · Answer 12 · 2026-04-14 21:03:34

599

Views

Find complex Fourier coefficients of $f(-x), f^*(x)$

Published on 14 Apr 2026 - 21:03

score 390 · Answer 13 · 2026-04-12 05:52:35

390

Views

DTFT and its convergence

Published on 12 Apr 2026 - 5:52

score 601 · Answer 14 · 2026-04-15 21:28:50

601

Views

Why is boundedness of the ball multiplier equivalent to the convergence of Fourier transform in Lp?

Published on 15 Apr 2026 - 21:28

score 692 · Answer 15 · 2026-04-16 07:20:16

692

Views

Solving Laplace $\nabla^2 \phi=0$ in $x,y \geqslant 0$

Published on 16 Apr 2026 - 7:20

List Question

Suppose $f$ fulfils a unity condition. Prove $\hat{f}(0)=1$

Fourier transform proof

Show that {$\phi (x-n), n\in \Bbb{Z}$} is an orthonormal sequence in $L^2(\Bbb{R})$

Find a function whose Fourier transform is the following

Fourier transformation of complex exponential proof

Choosing which variable to take the Fourier Transform with respect to

What would be the Z transform from fourier transform?

$e^{t\Delta }f $ grows at the same rate as $[\int f]G_t$ in $L_2$

Hankel transform with Bessel functions of the second kind

Prove the periodic total variation of f = $\sum_{n=0}^{N-1} |(f*h)[n]|$

Find the coefficients of the Fourier series that minimise the error.

Find complex Fourier coefficients of $f(-x), f^*(x)$

DTFT and its convergence

Why is boundedness of the ball multiplier equivalent to the convergence of Fourier transform in Lp?

Solving Laplace $\nabla^2 \phi=0$ in $x,y \geqslant 0$

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