Question

Bijection between complex valued functions on the unit circle and on the real line

score 101 · Answer 1 · 2026-04-07 03:35:02

101

Views

Bijection between complex valued functions on the unit circle and on the real line

Published on 07 Apr 2026 - 3:35

score 73 · Answer 2 · 2026-03-30 03:03:27

73

Views

Taylor expansion of Fourier series coefficient

Published on 30 Mar 2026 - 3:03

score 96 · Answer 3 · 2026-04-03 09:14:49

96

Views

Showing that $\forall t>0,x\in\mathbb{R}:\sum_{n=-\infty}^{\infty}(1+|n|)^{-t}|\hat{g}(x-n)|\leq A(1+|x|)^{-t} A>0$ when $g\in\mathcal{S}(\mathbb{R})$

Published on 03 Apr 2026 - 9:14

score 55 · Answer 4 · 2023-03-16 07:58:02

How can you show that the complex exponents 'span' the set of functions? Or how can you show that every function can be expanded as fourier series?

score 55 · Answer 5 · 2026-03-28 05:22:20

55

Views

Continuity on the transform $f\mapsto f^{-1}$ in Wiener algebra

Published on 28 Mar 2026 - 5:22

score 71 · Answer 6 · 2026-04-07 03:18:14

71

Views

Rudin’s RCA A Convergence Problem Fourier Series

Published on 07 Apr 2026 - 3:18

score 25 · Answer 7 · 2023-03-22 15:11:48

25

Views

Set of feature points and Fourier series

Published on 22 Mar 2023 - 15:11

score 31 · Answer 8 · 2023-03-22 15:13:19

31

Views

Determine the real Fourier series for $f(t) = t^2$ with $t \in [0, 1[$ converging as fast as possible.

Published on 22 Mar 2023 - 15:13

score 81 · Answer 9 · 2026-04-07 05:10:27

81

Views

Rudin's RCA Fourier Coefficients of $L^1$ - functions

Published on 07 Apr 2026 - 5:10

score 41 · Answer 10 · 2026-03-29 22:33:15

41

Views

False proof that uniform convergence of Fourier series implies smoothness

Published on 29 Mar 2026 - 22:33

score 154 · Answer 11 · 2023-03-23 20:11:05

154

Views

Rudin's RCA $5.15$ Theorem.

Published on 23 Mar 2023 - 20:11

score 19 · Answer 12 · 2026-02-23 08:33:59

19

Views

Can you use the weierstrass approximation theorem to show the convergence of fourier series to its function?

Published on 23 Feb 2026 - 8:33

score 80 · Answer 13 · 2026-03-28 05:23:16

80

Views

Bound of the norm of $f^{-1}$ in Wiener algebra

Published on 28 Mar 2026 - 5:23

score 186 · Answer 14 · 2026-04-03 11:06:05

186

Views

Why is the wiener algebra a subset of continuous functions

Published on 03 Apr 2026 - 11:06

score 33 · Answer 15 · 2026-03-27 14:03:23

33

Views

Question on finding a Hilbert space isomorphism between $L^2([0,R]^n)\otimes L^2([0,R]^m)$ and $L^2([0,R]^{n+m})$

Published on 27 Mar 2026 - 14:03

List Question

Bijection between complex valued functions on the unit circle and on the real line

Taylor expansion of Fourier series coefficient

Showing that $\forall t>0,x\in\mathbb{R}:\sum_{n=-\infty}^{\infty}(1+|n|)^{-t}|\hat{g}(x-n)|\leq A(1+|x|)^{-t} A>0$ when $g\in\mathcal{S}(\mathbb{R})$

How can you show that the complex exponents 'span' the set of functions? Or how can you show that every function can be expanded as fourier series?

Continuity on the transform $f\mapsto f^{-1}$ in Wiener algebra

Rudin’s RCA A Convergence Problem Fourier Series

Set of feature points and Fourier series

Determine the real Fourier series for $f(t) = t^2$ with $t \in [0, 1[$ converging as fast as possible.

Rudin's RCA Fourier Coefficients of $L^1$ - functions

False proof that uniform convergence of Fourier series implies smoothness

Rudin's RCA $5.15$ Theorem.

Can you use the weierstrass approximation theorem to show the convergence of fourier series to its function?

Bound of the norm of $f^{-1}$ in Wiener algebra

Why is the wiener algebra a subset of continuous functions

Question on finding a Hilbert space isomorphism between $L^2([0,R]^n)\otimes L^2([0,R]^m)$ and $L^2([0,R]^{n+m})$

Trending Questions

Popular # Hahtags

Popular Questions