List questions from fourier-series

Published on 18 May 2018 - 1:49

51

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Well posedness of PDEs of the form $u_{tt} + \left[ P ( \partial_x)\right]^2u=0$

Published on 19 May 2018 - 18:19

68

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Fourier and differential equations

Published on 20 May 2018 - 12:54

126

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Evaluating $\int_0^\pi \frac{\sin{mt}\sin{nt}}{a+b\cos{nt}}dt$

Published on 21 May 2018 - 10:42

193

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Fourier coefficient as convolution

Published on 21 May 2018 - 11:35

202

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How to find where a Fourier series is discontinuous

Published on 21 May 2018 - 17:21

64

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Show $\sum_{n \in \mathbb Z} |\hat f(n)| \leq \frac{1}{\sqrt{2\pi}}||f||_1 + \frac{\pi}{\sqrt 3}||f'||_2$ for $f,f' \in L_\mathbb C ^2 [0. 2\pi] $

Published on 22 May 2018 - 14:56

64

Views

Fourier series/transform for function transformation

Published on 23 May 2018 - 5:22

166

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Integration of Fourier series produces denominator of $0$

Published on 25 Mar 2026 - 14:36

417

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Proving an inequality for fourier coefficients

Published on 24 May 2018 - 20:27

124

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Proof of the phase of the Fourier Transform

Published on 25 May 2018 - 0:55

643

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Fourier Series Shortcut for $\sin(3x)\cos^{2}(7x)$

Published on 25 May 2018 - 21:37

458

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Laplace Equation on Rectangle & Fourier Series

Published on 25 Mar 2026 - 12:48

31

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Fourier series of a system

Published on 28 May 2018 - 22:18

326

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Solution of $\nabla^2u=u_{xx}+u_{yy}=0$?

Published on 26 Mar 2026 - 6:05

List Question

Applying Jacobi–Anger expansion with fourier series

Well posedness of PDEs of the form $u_{tt} + \left[ P ( \partial_x)\right]^2u=0$

Fourier and differential equations

Evaluating $\int_0^\pi \frac{\sin{mt}\sin{nt}}{a+b\cos{nt}}dt$

Fourier coefficient as convolution

How to find where a Fourier series is discontinuous

Show $\sum_{n \in \mathbb Z} |\hat f(n)| \leq \frac{1}{\sqrt{2\pi}}||f||_1 + \frac{\pi}{\sqrt 3}||f'||_2$ for $f,f' \in L_\mathbb C ^2 [0. 2\pi] $

Fourier series/transform for function transformation

Integration of Fourier series produces denominator of $0$

Proving an inequality for fourier coefficients

Proof of the phase of the Fourier Transform

Fourier Series Shortcut for $\sin(3x)\cos^{2}(7x)$

Laplace Equation on Rectangle & Fourier Series

Fourier series of a system

Solution of $\nabla^2u=u_{xx}+u_{yy}=0$?

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