List questions from fourier-series

Published on 11 Apr 2026 - 11:14

552

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Understanding the 2D discrete Fourier transform

Published on 29 Apr 2026 - 14:11

187

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Problems with deriving FT from FS using impulse train

Published on 12 Apr 2026 - 8:32

93

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Fourier Series pointwise convergence

Published on 11 Apr 2026 - 3:15

156

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Infinite binomial series over a column of Pascal's triangle: $F_k(x)= \sum\limits_{n=0}^\infty \binom{2n+k}n x^{2n+k}$

Published on 15 Apr 2026 - 12:18

53

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Prove $\sqrt2\sin(\pi pj\Delta x)$ is ONB of $\{U \in \mathbb{R}^{M+1} \mid U_1=U_M=0\}$ w.r.t. $(U,W)=\Delta x\sum_{j=0}^{M}U_jW_j$

Published on 16 Apr 2026 - 7:31

106

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Which is the transform/result of $\int_a^b \delta(t-a)e^{-iwt}dt$?

Published on 29 Apr 2026 - 14:17

73

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Hint for Dini’s condition of piecewise function at zero

Published on 12 Apr 2026 - 22:50

183

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Fourier series of iterated sin / Diagonalization of an infinite matrix of Bessel functions

Published on 10 May 2026 - 18:45

144

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Cusp form growth condition

Published on 13 Apr 2026 - 8:37

193

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Expanding a function into a Fourier series

Published on 10 Apr 2026 - 7:08

559

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Proof of Inverse of Cosine Transforms

Published on 29 Apr 2026 - 14:17

392

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fourier series / fourier series transform

Published on 29 Apr 2026 - 15:19

154

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Sum of $\exp(ikx)$ over $k ∈ \mathbb{N}_0$

Published on 13 Apr 2026 - 17:07

232

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Does uniform convergence imply absolute convergence for Fourier series?

Published on 12 Apr 2026 - 2:42

List Question

Fourier series exponential form

Understanding the 2D discrete Fourier transform

Problems with deriving FT from FS using impulse train

Fourier Series pointwise convergence

Infinite binomial series over a column of Pascal's triangle: $F_k(x)= \sum\limits_{n=0}^\infty \binom{2n+k}n x^{2n+k}$

Prove $\sqrt2\sin(\pi pj\Delta x)$ is ONB of $\{U \in \mathbb{R}^{M+1} \mid U_1=U_M=0\}$ w.r.t. $(U,W)=\Delta x\sum_{j=0}^{M}U_jW_j$

Which is the transform/result of $\int_a^b \delta(t-a)e^{-iwt}dt$?

Hint for Dini’s condition of piecewise function at zero

Fourier series of iterated sin / Diagonalization of an infinite matrix of Bessel functions

Cusp form growth condition

Expanding a function into a Fourier series

Proof of Inverse of Cosine Transforms

fourier series / fourier series transform

Sum of $\exp(ikx)$ over $k ∈ \mathbb{N}_0$

Does uniform convergence imply absolute convergence for Fourier series?

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