List questions from harmonic-analysis

Published on 29 Mar 2026 - 2:12

492

Views

How can I prove that the Hilbert transform on the 1-torus doesn't map $L^1(\mathbb{T})$ into itself?

Published on 25 Mar 2026 - 18:52

400

Views

Measurability of maximal functions

Published on 29 Mar 2026 - 10:48

21

Views

If $u$ subharmonic, why $U_s=\{x\mid u(x)=s\}$ is open?

Published on 26 Mar 2019 - 7:35

71

Views

weighted inequality of Fourier transform

Published on 29 Mar 2026 - 12:05

567

Views

Harmonic analysis needed for the Langlands program

Published on 30 Mar 2019 - 3:24

384

Views

Fourier exponential series of odd functions does not have even coefficients?

Published on 31 Mar 2019 - 0:28

2k

Views

Hardy-Littlewood Maximal Function and Characteristic Functions

Published on 29 Mar 2026 - 14:08

38

Views

convolution of the multiplier and integrable function

Published on 31 Mar 2019 - 14:10

29

Views

$\ell^1$ Space of a Group $G$

Published on 01 Apr 2019 - 12:18

267

Views

How to use Van der Corput's lemma to get the following estimates?

Published on 30 Mar 2026 - 8:57

85

Views

$L^2$ norm of Riesz Potential of Disk

Published on 25 Mar 2026 - 20:15

116

Views

Number System with Torsion

Published on 25 Mar 2026 - 23:51

150

Views

Fourier transform of $\exp(-z^k)$: How can one quatify its decay?

Published on 29 Mar 2026 - 15:35

31

Views

Bounded linear operator in subset implies bounded in the whole space?

Published on 14 Apr 2019 - 20:39

List Question

Boundness of Fourier thansform

How can I prove that the Hilbert transform on the 1-torus doesn't map $L^1(\mathbb{T})$ into itself?

Measurability of maximal functions

If $u$ subharmonic, why $U_s=\{x\mid u(x)=s\}$ is open?

weighted inequality of Fourier transform

Harmonic analysis needed for the Langlands program

Fourier exponential series of odd functions does not have even coefficients?

Hardy-Littlewood Maximal Function and Characteristic Functions

convolution of the multiplier and integrable function

$\ell^1$ Space of a Group $G$

How to use Van der Corput's lemma to get the following estimates?

$L^2$ norm of Riesz Potential of Disk

Number System with Torsion

Fourier transform of $\exp(-z^k)$: How can one quatify its decay?

Bounded linear operator in subset implies bounded in the whole space?

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