Question

What does it mean for a function to converge at a point of discontinuity?

score 359 · Answer 1 · 2026-04-13 13:28:36

359

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What does it mean for a function to converge at a point of discontinuity?

Published on 13 Apr 2026 - 13:28

score 483 · Answer 2 · 2026-04-08 20:48:44

483

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Multi layer perceptron activation function

Published on 08 Apr 2026 - 20:48

score 1.1k · Answer 3 · 2026-04-12 10:45:56

1.1k

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Is the matrix Wn from the DFT a Hermitian operator?

Published on 12 Apr 2026 - 10:45

score 1.5k · Answer 4 · 2026-04-14 02:50:58

1.5k

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Show a Fourier series converges uniformly

Published on 14 Apr 2026 - 2:50

score 204 · Answer 5 · 2026-04-12 22:56:02

204

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Why is there an exponential in Fourier's defining integral?

Published on 12 Apr 2026 - 22:56

score 39.9k · Answer 6 · 2026-04-11 17:57:12

39.9k

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fourier series of $|\sin x|$

Published on 11 Apr 2026 - 17:57

score 105 · Answer 7 · 2026-04-16 05:41:10

105

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Prove that $\sum\limits _{n=-\infty}^{n=\infty}\cos\left(2\pi nt\right)=\sum\limits _{n=-\infty}^{n=\infty}\delta\left(t-n\right)$

Published on 16 Apr 2026 - 5:41

score 184 · Answer 8 · 2026-04-16 00:34:59

184

Views

Find the Fourier coefficient for the function $f(t)=t^3-2t$

Published on 16 Apr 2026 - 0:34

score 113 · Answer 9 · 2026-04-16 14:05:01

113

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Does $\int_{0}^{\pi/2n}\left|\frac{\sin(2n+1)t}{\sin t}\right|\text{d}t\leq \pi$ hold for $n \geq 2$?

Published on 16 Apr 2026 - 14:05

score 3.2k · Answer 10 · 2026-04-11 07:25:28

3.2k

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Is it possible to do a half-range sine expansion on the sine function?

Published on 11 Apr 2026 - 7:25

score 142 · Answer 11 · 2026-04-14 04:27:37

142

Views

Evenness of Fourier coefficients

Published on 14 Apr 2026 - 4:27

score 619 · Answer 12 · 2026-04-14 01:14:05

619

Views

Evenness of Fourier coefficients implies even function

Published on 14 Apr 2026 - 1:14

score 4k · Answer 13 · 2026-04-12 05:51:40

4k

Views

Condition on Fourier coefficients for real-valued function

Published on 12 Apr 2026 - 5:51

score 166 · Answer 14 · 2026-04-24 09:40:55

166

Views

Trigonometric functions are dense in Sobolev Spaces

Published on 24 Apr 2026 - 9:40

score 59 · Answer 15 · 2026-04-11 06:25:26

59

Views

Is $f$ is non-prime, Can we say $|f|$ is also non-prime ; in convolution algebra?

Published on 11 Apr 2026 - 6:25

List Question

What does it mean for a function to converge at a point of discontinuity?

Multi layer perceptron activation function

Is the matrix Wn from the DFT a Hermitian operator?

Show a Fourier series converges uniformly

Why is there an exponential in Fourier's defining integral?

fourier series of $|\sin x|$

Prove that $\sum\limits _{n=-\infty}^{n=\infty}\cos\left(2\pi nt\right)=\sum\limits _{n=-\infty}^{n=\infty}\delta\left(t-n\right)$

Find the Fourier coefficient for the function $f(t)=t^3-2t$

Does $\int_{0}^{\pi/2n}\left|\frac{\sin(2n+1)t}{\sin t}\right|\text{d}t\leq \pi$ hold for $n \geq 2$?

Is it possible to do a half-range sine expansion on the sine function?

Evenness of Fourier coefficients

Evenness of Fourier coefficients implies even function

Condition on Fourier coefficients for real-valued function

Trigonometric functions are dense in Sobolev Spaces

Is $f$ is non-prime, Can we say $|f|$ is also non-prime ; in convolution algebra?

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