List questions from harmonic-analysis

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Family of equivalent unitary representations is not a set.

Published on 26 Mar 2026 - 17:32

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Which $f \in L^\infty$ are the Fourier transform of a bounded complex measure?

Published on 30 Jul 2014 - 16:29

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Sequence of trigonometric polynomials which converges to an integrable function

Published on 26 Mar 2026 - 11:16

817

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Decay of the Fourier transform of the surface measure of the sphere via uncertainty

Published on 23 Mar 2026 - 13:40

219

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Statement regarding mean value theorem for harmonic functions

Published on 04 Aug 2014 - 13:55

91

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The variation of Calderon reproducing formula

Published on 04 Aug 2014 - 15:58

358

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Bounded approximate identities in one-sided ideals of $L_1(G)$

Published on 23 Feb 2026 - 2:12

71

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Is the action on $L^2$ arising from a measure preserving action continuous?

Published on 09 Aug 2014 - 8:41

148

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Odd form of controlling derivatves

Published on 11 Aug 2014 - 13:13

216

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Sufficient condition for an operator to be compact in Hilbert space of holomorphic function with respect to Gaussion weight (Fock space).

Published on 26 Mar 2026 - 11:01

562

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Fourier series and Riemann integral

Published on 31 Mar 2026 - 14:35

150

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characterization of unital Fourier multipliers on $L^\infty(\mathbb{R})$?

Published on 31 Mar 2026 - 14:40

95

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Calderón reproducing formula : $\int_{0}^{\infty}\int_{R^d}|\phi_{t}(x-y)||(\phi_t*f)(y)|\frac{dt}{t}dy<\infty$

Published on 14 Aug 2014 - 18:55

514

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Convolution operator positive definite?

Published on 28 Mar 2026 - 6:05

List Question

norm of a singular integral operator

Family of equivalent unitary representations is not a set.

Which $f \in L^\infty$ are the Fourier transform of a bounded complex measure?

Sequence of trigonometric polynomials which converges to an integrable function

Decay of the Fourier transform of the surface measure of the sphere via uncertainty

Statement regarding mean value theorem for harmonic functions

The variation of Calderon reproducing formula

Bounded approximate identities in one-sided ideals of $L_1(G)$

Is the action on $L^2$ arising from a measure preserving action continuous?

Odd form of controlling derivatves

Sufficient condition for an operator to be compact in Hilbert space of holomorphic function with respect to Gaussion weight (Fock space).

Fourier series and Riemann integral

characterization of unital Fourier multipliers on $L^\infty(\mathbb{R})$?

Calderón reproducing formula : $\int_{0}^{\infty}\int_{R^d}|\phi_{t}(x-y)||(\phi_t*f)(y)|\frac{dt}{t}dy<\infty$

Convolution operator positive definite?

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