Question

Several quesions about proof of Theorem mentioned in the book "A course in abstract harmonic analysis" by B.Folland

score 47 · Answer 1 · 2026-04-15 07:19:17

Several quesions about proof of Theorem mentioned in the book "A course in abstract harmonic analysis" by B.Folland

score 267 · Answer 2 · 2026-04-09 03:17:49

267

Views

"Harmonic analysis" comment

Published on 09 Apr 2026 - 3:17

score 63 · Answer 3 · 2026-04-11 09:24:24

63

Views

Interchange Hilbert transform and convolution operator for $L^{\infty}$.

Published on 11 Apr 2026 - 9:24

score 59 · Answer 4 · 2026-04-16 22:54:08

59

Views

Show that $\log\left(\frac{|x-a| |x-b|}{|x-c|^ 2}\right)$ is bounded by $4 \frac{|b-a|^2}{|x-c|^2}$

Published on 16 Apr 2026 - 22:54

score 65 · Answer 5 · 2026-04-13 13:37:22

65

Views

Relation between inverse Fourier transform of dyadic bump function and its regularity.

Published on 13 Apr 2026 - 13:37

score 37 · Answer 6 · 2026-04-13 19:24:12

37

Views

For $\varphi$ in the Schwartz space, why is $ \left[(y, \xi) \mapsto e^{i \xi \cdot x} e^{-i \xi \cdot y} \varphi(y)\right] $ is not integrable

Published on 13 Apr 2026 - 19:24

score 52 · Answer 7 · 2026-04-11 14:41:05

52

Views

exercise 2.2.14 from Classical Fourier Analysis about an inequality

Published on 11 Apr 2026 - 14:41

score 89 · Answer 8 · 2026-04-09 09:00:55

89

Views

Extending the definition of convolution product on $\mathcal{F}(C(G))$, $G$ abelian compact group

Published on 09 Apr 2026 - 9:00

score 63 · Answer 9 · 2026-04-11 04:24:31

63

Views

Intertwining operator and $C^*$ algebra?

Published on 11 Apr 2026 - 4:24

score 109 · Answer 10 · 2026-04-13 07:49:20

109

Views

A detail about multivariable calculus concerning $\int_{\mathbb{S}^{n-1}}\theta^{\alpha}d\theta$ whether equal to $0$

Published on 13 Apr 2026 - 7:49

score 498 · Answer 11 · 2026-04-08 20:53:58

498

Views

Poisson equation, spectral method and Hermitian symmetry of DFT

Published on 08 Apr 2026 - 20:53

score 54 · Answer 12 · 2026-04-09 01:10:23

54

Views

Estimate on the first term in $(\ast)$

Published on 09 Apr 2026 - 1:10

score 71 · Answer 13 · 2026-04-14 21:54:04

71

Views

Functions that commute with the Laplacian

Published on 14 Apr 2026 - 21:54

score 88 · Answer 14 · 2026-04-20 06:19:03

88

Views

Proof of proposition2.4.7 in Classical Fourier Analysis: A detail about $\langle u,\Psi\rangle=\langle\hat{u},\hat{\Psi}\rangle$

Published on 20 Apr 2026 - 6:19

score 95 · Answer 15 · 2026-04-08 19:20:52

95

Views

Counter example about convolution of symmetric functions on locally compact groups

Published on 08 Apr 2026 - 19:20

List Question

Several quesions about proof of Theorem mentioned in the book "A course in abstract harmonic analysis" by B.Folland

"Harmonic analysis" comment

Interchange Hilbert transform and convolution operator for $L^{\infty}$.

Show that $\log\left(\frac{|x-a| |x-b|}{|x-c|^ 2}\right)$ is bounded by $4 \frac{|b-a|^2}{|x-c|^2}$

Relation between inverse Fourier transform of dyadic bump function and its regularity.

For $\varphi$ in the Schwartz space, why is $ \left[(y, \xi) \mapsto e^{i \xi \cdot x} e^{-i \xi \cdot y} \varphi(y)\right] $ is not integrable

exercise 2.2.14 from Classical Fourier Analysis about an inequality

Extending the definition of convolution product on $\mathcal{F}(C(G))$, $G$ abelian compact group

Intertwining operator and $C^*$ algebra?

A detail about multivariable calculus concerning $\int_{\mathbb{S}^{n-1}}\theta^{\alpha}d\theta$ whether equal to $0$

Poisson equation, spectral method and Hermitian symmetry of DFT

Estimate on the first term in $(\ast)$

Functions that commute with the Laplacian

Proof of proposition2.4.7 in Classical Fourier Analysis: A detail about $\langle u,\Psi\rangle=\langle\hat{u},\hat{\Psi}\rangle$

Counter example about convolution of symmetric functions on locally compact groups

Trending Questions

Popular # Hahtags

Popular Questions