List questions from fourier-series

Published on 08 Apr 2026 - 17:24

106

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Is this Fourier series some combination of Eisenstein series?

Published on 11 Apr 2026 - 5:29

95

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Fourier series of a function with boundary conditions

Published on 11 Apr 2026 - 3:15

148

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Calculating The Rate of Convergence of a Fourier Series

Published on 11 May 2026 - 10:18

25

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PDE fouriertransform

Published on 04 May 2026 - 16:48

135

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Orthonormal set and Fourier Series

Published on 11 Apr 2026 - 6:56

52

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Building Fractional Frequencies From Integer Frequencies

Published on 11 May 2026 - 5:16

36

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How to parametize Fourier series coefficients

Published on 08 Apr 2026 - 19:56

959

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Use parseval's identity to prove $\int_0^\infty {\sin^4t \over t^2} dt = {\pi \over 4}$

Published on 16 Apr 2026 - 10:57

54

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Complex Fourier-series

Published on 11 Apr 2026 - 13:45

49

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Finding a solution that fulfills $u(x,1) = \sin(\pi x) \cos(2\pi x)$

Published on 15 Apr 2026 - 7:42

62

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Prove $f(x)=\sum_{n=-\infty}^\infty a_ne^{inx}$ satisfying $\sum |n||a_n|\leq 1$ is continuously differentiable

Published on 16 Apr 2026 - 3:32

36

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bi-orthogonal vs orthogonal functions

Published on 12 Apr 2026 - 2:58

45

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Fourier series of $\frac{1-r^2}{1-2r\cos x+r^2}$ when $|r|<1$

Published on 13 Apr 2026 - 13:35

54

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Find a number $N \in \mathbb{N}$ such that $|f(x) - \sum_{n=0}^{N}| \leq 0.1$. Trouble with minus-sign.

Published on 14 Apr 2026 - 21:00

List Question

Physical interpreation regarding heat equation

Is this Fourier series some combination of Eisenstein series?

Fourier series of a function with boundary conditions

Calculating The Rate of Convergence of a Fourier Series

PDE fouriertransform

Orthonormal set and Fourier Series

Building Fractional Frequencies From Integer Frequencies

How to parametize Fourier series coefficients

Use parseval's identity to prove $\int_0^\infty {\sin^4t \over t^2} dt = {\pi \over 4}$

Complex Fourier-series

Finding a solution that fulfills $u(x,1) = \sin(\pi x) \cos(2\pi x)$

Prove $f(x)=\sum_{n=-\infty}^\infty a_ne^{inx}$ satisfying $\sum |n||a_n|\leq 1$ is continuously differentiable

bi-orthogonal vs orthogonal functions

Fourier series of $\frac{1-r^2}{1-2r\cos x+r^2}$ when $|r|<1$

Find a number $N \in \mathbb{N}$ such that $|f(x) - \sum_{n=0}^{N}| \leq 0.1$. Trouble with minus-sign.

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