Question

Relation between the smoothness of a function and the decay of its Fourier coefficients

score 187 · Answer 1 · 2026-04-12 13:29:10

187

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Relation between the smoothness of a function and the decay of its Fourier coefficients

Published on 12 Apr 2026 - 13:29

score 27 · Answer 2 · 2026-04-15 11:31:26

27

Views

Complex Fourier series: which notation is correct?

Published on 15 Apr 2026 - 11:31

score 340 · Answer 3 · 2026-04-14 22:43:00

340

Views

Integral $\int_0^{2\pi}e^{\sin^2x}dx$

Published on 14 Apr 2026 - 22:43

score 676 · Answer 4 · 2026-04-15 13:55:10

676

Views

Showing set of complex exponentials is an orthogonal basis

Published on 15 Apr 2026 - 13:55

score 48 · Answer 5 · 2026-04-14 01:50:20

48

Views

Meaning of opposite sign in Fourier's exponents

Published on 14 Apr 2026 - 1:50

score 390 · Answer 6 · 2026-04-14 19:16:15

390

Views

Show that the inner product of the Legendre polynomials and $p\in L^2 ([-1,1])$ is equal to zero if the polynomial has degrees less than $n$

Published on 14 Apr 2026 - 19:16

score 175 · Answer 7 · 2026-04-12 08:44:50

175

Views

Question about Graf’s and Gegenbauer’s Addition Theorems

Published on 12 Apr 2026 - 8:44

score 132 · Answer 8 · 2026-04-15 21:23:53

132

Views

Let $ f \in R([0,2 \pi]) $. Then, $ \forall \epsilon>0 $ there exists a continuous function $ g $ on $ [0, 2 \pi ] $ s.t. $ || f - g || < \epsilon $.

Published on 15 Apr 2026 - 21:23

score 260 · Answer 9 · 2026-04-17 12:55:25

260

Views

Integral of the Dirac Delta Function and Discrete Time Fourier Transform

Published on 17 Apr 2026 - 12:55

score 76 · Answer 10 · 2026-04-16 13:26:04

76

Views

Isoperimetric Inequality : in differentiable $C^1$-case.

Published on 16 Apr 2026 - 13:26

score 70 · Answer 11 · 2026-04-16 13:55:25

70

Views

Orthogonal basis for $L^2[0,1]$

Published on 16 Apr 2026 - 13:55

score 306 · Answer 12 · 2026-04-28 21:32:21

306

Views

A "shortcut" calculating Fourier series?

Published on 28 Apr 2026 - 21:32

score 650 · Answer 13 · 2026-04-15 16:42:12

650

Views

Fourier Transform of complex exponential $ \omega $ vs. $ 2 \pi f $

Published on 15 Apr 2026 - 16:42

score 34 · Answer 14 · 2026-04-11 10:29:12

34

Views

How to perform harmonic balancing on a 2nd order linear differential equation with time-varying coefficients

Published on 11 Apr 2026 - 10:29

score 83 · Answer 15 · 2026-04-12 15:08:42

83

Views

Which function is appropriate to analyse, using parseval's identity, to sum $\frac{1}{n^2-a^2}$?

Published on 12 Apr 2026 - 15:08

List Question

Relation between the smoothness of a function and the decay of its Fourier coefficients

Complex Fourier series: which notation is correct?

Integral $\int_0^{2\pi}e^{\sin^2x}dx$

Showing set of complex exponentials is an orthogonal basis

Meaning of opposite sign in Fourier's exponents

Show that the inner product of the Legendre polynomials and $p\in L^2 ([-1,1])$ is equal to zero if the polynomial has degrees less than $n$

Question about Graf’s and Gegenbauer’s Addition Theorems

Let $ f \in R([0,2 \pi]) $. Then, $ \forall \epsilon>0 $ there exists a continuous function $ g $ on $ [0, 2 \pi ] $ s.t. $ || f - g || < \epsilon $.

Integral of the Dirac Delta Function and Discrete Time Fourier Transform

Isoperimetric Inequality : in differentiable $C^1$-case.

Orthogonal basis for $L^2[0,1]$

A "shortcut" calculating Fourier series?

Fourier Transform of complex exponential $ \omega $ vs. $ 2 \pi f $

How to perform harmonic balancing on a 2nd order linear differential equation with time-varying coefficients

Which function is appropriate to analyse, using parseval's identity, to sum $\frac{1}{n^2-a^2}$?

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