Question

laplace equation with bisection boundary condition on upper side

score 126 · Answer 1 · 2026-04-13 20:21:31

126

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laplace equation with bisection boundary condition on upper side

Published on 13 Apr 2026 - 20:21

score 83 · Answer 2 · 2026-04-12 05:16:16

83

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Vanishing of a certain double sum of roots of unity

Published on 12 Apr 2026 - 5:16

score 47 · Answer 3 · 2026-04-16 05:58:39

Rewriting $\int d \textbf{r} \int d \textbf{R} \rho_1(\textbf{r})\rho_2(\textbf{R})v(|\textbf{r}-\textbf{R}|)$ in terms of Fourier components

score 42 · Answer 4 · 2026-04-18 18:22:55

42

Views

making sense of $\int dx |x| \exp(ik x ) = -2/k^2$

Published on 18 Apr 2026 - 18:22

score 44 · Answer 5 · 2026-04-06 19:46:21

44

Views

Bivariate normal CFD approximation using characteristic function

Published on 06 Apr 2026 - 19:46

score 165 · Answer 6 · 2026-04-22 11:38:11

165

Views

Showing that if $f$ is in Schwartz space $\mathscr{S}(\mathbb{R})$ then its Fourier transform is also in $\mathscr{S}(\mathbb{R})$

Published on 22 Apr 2026 - 11:38

score 83 · Answer 7 · 2026-04-09 07:07:12

83

Views

Fourier Transform of $e^{i \sinh x}$

Published on 09 Apr 2026 - 7:07

score 30 · Answer 8 · 2026-04-11 21:27:57

30

Views

What happens if you Fourier transform from a continuous space to a discrete space?

Published on 11 Apr 2026 - 21:27

score 256 · Answer 9 · 2026-04-22 16:21:46

256

Views

Suppose that $f \in L^1 $ and $\hat{f} \geq 0$. If $f$ is continuous in $0$ then $\hat{f} \in L^1$

Published on 22 Apr 2026 - 16:21

score 79 · Answer 10 · 2026-04-13 10:26:23

79

Views

In the Fourier transform of $f(x)$ why does $k$ belong to the dual real line?

Published on 13 Apr 2026 - 10:26

score 98 · Answer 11 · 2026-04-14 17:59:21

98

Views

Where am I going wrong while trying to figure out the sum of the finite series?

Published on 14 Apr 2026 - 17:59

score 90 · Answer 12 · 2026-04-15 13:24:31

90

Views

On the Fourier transform of Dirac measure

Published on 15 Apr 2026 - 13:24

score 156 · Answer 13 · 2026-04-16 02:45:55

156

Views

Finding the Fourier transform of $f(t) = e^{-3t^2}$ when it is known that $g = \hat{g}$ with $g(t) = e^{-\pi t^2}$

Published on 16 Apr 2026 - 2:45

score 182 · Answer 14 · 2026-04-14 00:40:58

182

Views

Fourier transform to solve $u_{xx} + u_{yy}+u_{zz} = \delta(x,y,z)$

Published on 14 Apr 2026 - 0:40

score 35 · Answer 15 · 2026-04-14 10:02:21

35

Views

DFT coefficients are totally different from FFT

Published on 14 Apr 2026 - 10:02

List Question

laplace equation with bisection boundary condition on upper side

Vanishing of a certain double sum of roots of unity

Rewriting $\int d \textbf{r} \int d \textbf{R} \rho_1(\textbf{r})\rho_2(\textbf{R})v(|\textbf{r}-\textbf{R}|)$ in terms of Fourier components

making sense of $\int dx |x| \exp(ik x ) = -2/k^2$

Bivariate normal CFD approximation using characteristic function

Showing that if $f$ is in Schwartz space $\mathscr{S}(\mathbb{R})$ then its Fourier transform is also in $\mathscr{S}(\mathbb{R})$

Fourier Transform of $e^{i \sinh x}$

What happens if you Fourier transform from a continuous space to a discrete space?

Suppose that $f \in L^1 $ and $\hat{f} \geq 0$. If $f$ is continuous in $0$ then $\hat{f} \in L^1$

In the Fourier transform of $f(x)$ why does $k$ belong to the dual real line?

Where am I going wrong while trying to figure out the sum of the finite series?

On the Fourier transform of Dirac measure

Finding the Fourier transform of $f(t) = e^{-3t^2}$ when it is known that $g = \hat{g}$ with $g(t) = e^{-\pi t^2}$

Fourier transform to solve $u_{xx} + u_{yy}+u_{zz} = \delta(x,y,z)$

DFT coefficients are totally different from FFT

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