List questions from fourier-analysis

Published on 27 Mar 2026 - 16:20

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$L^2$ convergence of Fourier series

Published on 01 Apr 2026 - 15:39

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Is my Fourier Transform calculation right?

Published on 30 Oct 2018 - 3:54

369

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How to present the function by the Fourier integral?

Published on 27 Mar 2026 - 16:20

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If the function is neither even nor odd ,is its fourier series coefficient a complex? or is this wrong?

Published on 23 Feb 2026 - 2:46

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Evaluating $\sum_{n∈N}1/n^2$with the Poisson summation formula on Fejér kernel

Published on 31 Oct 2018 - 23:28

309

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Questions about Lebesgue differentiation theorem

Published on 27 Mar 2026 - 13:20

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The Fourier series of the function $f:[0,L] \to \mathbb{R}$ extended periodically of period $2L$ is unique?

Published on 27 Mar 2026 - 18:10

139

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Why is the plot of $f(t)=\frac{\partial}{\partial t}\left\{\sin(\sin(\pi t))\right\}$ so similar to a triangle wave?

Published on 25 Mar 2026 - 20:53

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2D Signal Properties of Fourier Transformation

Published on 27 Mar 2026 - 17:24

232

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Fourier Series in any interval [a,b]

Published on 27 Mar 2026 - 18:08

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What is n-dimensional DFT as a linear transformation matrix look like? How it can be expressed as a matrix multiplication?

Published on 27 Mar 2026 - 22:53

251

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Sine Fourier Series for $\min(x, 1 - x)$.

Published on 27 Mar 2026 - 18:09

840

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Show that the function in the Fourier series of a periodic function of period $2L$ are orthogonals

Published on 27 Mar 2026 - 18:10

54

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Fourier transform, time scaling with -1

Published on 27 Mar 2026 - 17:29

List Question

Using Dini's test to prove convergence

$L^2$ convergence of Fourier series

Is my Fourier Transform calculation right?

How to present the function by the Fourier integral?

If the function is neither even nor odd ,is its fourier series coefficient a complex? or is this wrong?

Evaluating $\sum_{n∈N}1/n^2$with the Poisson summation formula on Fejér kernel

Questions about Lebesgue differentiation theorem

The Fourier series of the function $f:[0,L] \to \mathbb{R}$ extended periodically of period $2L$ is unique?

Why is the plot of $f(t)=\frac{\partial}{\partial t}\left\{\sin(\sin(\pi t))\right\}$ so similar to a triangle wave?

2D Signal Properties of Fourier Transformation

Fourier Series in any interval [a,b]

What is n-dimensional DFT as a linear transformation matrix look like? How it can be expressed as a matrix multiplication?

Sine Fourier Series for $\min(x, 1 - x)$.

Show that the function in the Fourier series of a periodic function of period $2L$ are orthogonals

Fourier transform, time scaling with -1

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