Question

How does the spherical Laplacian commute with the euclidean convolution?

score 309 · Answer 1 · 2026-04-10 04:59:05

309

Views

How does the spherical Laplacian commute with the euclidean convolution?

Published on 10 Apr 2026 - 4:59

score 46 · Answer 2 · 2020-08-08 13:12:38

46

Views

Finding an assumption on a sequence $(a_k)_{k \in \mathbb Z}$ such that the map $t \mapsto \sum_k a_ke^{ikt}$ is entire

Published on 08 Aug 2020 - 13:12

score 198 · Answer 3 · 2020-08-09 03:50:15

198

Views

Reference on how convolutions and multipliers relate in the sense of distributions

Published on 09 Aug 2020 - 3:50

score 279 · Answer 4 · 2026-04-10 03:48:44

279

Views

Relationship between autocorrelation function and wavelet coefficient

Published on 10 Apr 2026 - 3:48

score 44 · Answer 5 · 2020-08-10 18:02:23

44

Views

Product estimate in multi-variable (non-isotropic) Sobolev Spaces $H^{s,r}(R^2)$

Published on 10 Aug 2020 - 18:02

score 136 · Answer 6 · 2026-04-12 06:37:11

136

Views

Positive self dual Fourier eigenfuctions

Published on 12 Apr 2026 - 6:37

score 57 · Answer 7 · 2026-04-12 05:14:23

57

Views

A confusion about maximal functions in Rudin's book

Published on 12 Apr 2026 - 5:14

score 116 · Answer 8 · 2020-08-14 08:47:48

116

Views

What is the Fourier transform of the function $e^{-i\pi t^2}\chi_{[-1/2,1/2]}(t)$ where $\chi$ is the characteristic function?

Published on 14 Aug 2020 - 8:47

score 95 · Answer 9 · 2026-03-26 04:52:05

95

Views

How to construct an example of a function inside $H^{1/2}(S^1)\setminus \mathcal{A}(S^1)$?

Published on 26 Mar 2026 - 4:52

score 609 · Answer 10 · 2026-04-11 17:41:17

609

Views

What is the relation between Lipschitz and $BMO$ spaces?

Published on 11 Apr 2026 - 17:41

score 107 · Answer 11 · 2026-03-28 16:44:37

107

Views

Eigenvalues of spherical function on $\mathrm{SL}(2,\mathbb{R})$

Published on 28 Mar 2026 - 16:44

score 425 · Answer 12 · 2026-04-12 03:43:57

425

Views

Square-integrability in lemma 4.30 of Folland's "A Course in Abstract Harmonic Analysis"

Published on 12 Apr 2026 - 3:43

score 44 · Answer 13 · 2026-03-25 15:17:52

44

Views

Boardline case of $W^{2,p}$ estimates on elliptic equations

Published on 25 Mar 2026 - 15:17

score 140 · Answer 14 · 2026-03-26 09:50:04

140

Views

Proving a sum of a strange series $ \sum_{i=1}^{n} 11i^{10}-55i^9+165i^8-330i^7+462i^6 -462i^5+330i^4-165i^3+55i^2-11i+1 = n^{11} $

Published on 26 Mar 2026 - 9:50

score 64 · Answer 15 · 2026-03-31 18:27:38

64

Views

When do group-invariant bivariate functions depend on the distance only?

Published on 31 Mar 2026 - 18:27

List Question

How does the spherical Laplacian commute with the euclidean convolution?

Finding an assumption on a sequence $(a_k)_{k \in \mathbb Z}$ such that the map $t \mapsto \sum_k a_ke^{ikt}$ is entire

Reference on how convolutions and multipliers relate in the sense of distributions

Relationship between autocorrelation function and wavelet coefficient

Product estimate in multi-variable (non-isotropic) Sobolev Spaces $H^{s,r}(R^2)$

Positive self dual Fourier eigenfuctions

A confusion about maximal functions in Rudin's book

What is the Fourier transform of the function $e^{-i\pi t^2}\chi_{[-1/2,1/2]}(t)$ where $\chi$ is the characteristic function?

How to construct an example of a function inside $H^{1/2}(S^1)\setminus \mathcal{A}(S^1)$?

What is the relation between Lipschitz and $BMO$ spaces?

Eigenvalues of spherical function on $\mathrm{SL}(2,\mathbb{R})$

Square-integrability in lemma 4.30 of Folland's "A Course in Abstract Harmonic Analysis"

Boardline case of $W^{2,p}$ estimates on elliptic equations

Proving a sum of a strange series $ \sum_{i=1}^{n} 11i^{10}-55i^9+165i^8-330i^7+462i^6 -462i^5+330i^4-165i^3+55i^2-11i+1 = n^{11} $

When do group-invariant bivariate functions depend on the distance only?

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