List questions from fourier-analysis

693

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Using DTFT to find the sum of $\sum_{n=-\infty }^{\infty }\text{sinc}(n\alpha_1)\text{sinc}(n\alpha_2)$

Published on 16 Apr 2026 - 5:43

99

Views

The $p=\infty$ case for an $L^2$ convolution operator on $\mathbb{R}^n$

Published on 10 May 2026 - 23:34

1.2k

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Is $C^{\infty}(\mathbb{T})$ dense in $C(\mathbb{T})$?

Published on 14 Apr 2026 - 2:29

891

Views

The importance of the Van der Corput lemma in analysis and beyond

Published on 09 Apr 2026 - 3:17

2.1k

Views

Fourier series over non-symmetric interval

Published on 12 Apr 2026 - 4:56

63

Views

How compute Inverse Fourier of this function $\mathcal{F}^{-1} \Big\{\frac{1}{iw - \alpha^2 k^2}\Big\}$

Published on 14 Apr 2026 - 19:53

61

Views

Autocorrelation of a signal known only on an interval of finite size

Published on 13 Apr 2026 - 13:01

37

Views

A modulus inequality involving a minimum

Published on 11 Apr 2026 - 22:17

343

Views

Separation of variables and fourier transform

Published on 10 Apr 2026 - 23:12

2.1k

Views

Negacyclic FFT multiplication

Published on 16 Apr 2026 - 15:04

112

Views

Techniques in analytic number theory

Published on 08 Apr 2026 - 16:37

2.7k

Views

Proof that any integer of the fundamental period, is also a period of the function?

Published on 14 Apr 2026 - 21:41

179

Views

Argument for extenstion of the Fourier transform

Published on 17 Apr 2026 - 14:21

249

Views

improper integral, fourier transform

Published on 05 May 2026 - 5:47

489

Views

Understanding orthogonality of functions in the context of Fourier series

Published on 17 Apr 2026 - 18:07

List Question

Using DTFT to find the sum of $\sum_{n=-\infty }^{\infty }\text{sinc}(n\alpha_1)\text{sinc}(n\alpha_2)$

The $p=\infty$ case for an $L^2$ convolution operator on $\mathbb{R}^n$

Is $C^{\infty}(\mathbb{T})$ dense in $C(\mathbb{T})$?

The importance of the Van der Corput lemma in analysis and beyond

Fourier series over non-symmetric interval

How compute Inverse Fourier of this function $\mathcal{F}^{-1} \Big\{\frac{1}{iw - \alpha^2 k^2}\Big\}$

Autocorrelation of a signal known only on an interval of finite size

A modulus inequality involving a minimum

Separation of variables and fourier transform

Negacyclic FFT multiplication

Techniques in analytic number theory

Proof that any integer of the fundamental period, is also a period of the function?

Argument for extenstion of the Fourier transform

improper integral, fourier transform

Understanding orthogonality of functions in the context of Fourier series

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