List questions from fourier-analysis

Published on 08 Apr 2026 - 18:53

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The product of $\phi$ is a Schwartz function with $m \in L^\infty$.

Published on 14 Apr 2026 - 2:20

102

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Statements about the Fourier series

Published on 11 Apr 2026 - 13:35

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Continuous spectrum of Schrödinger operator

Published on 09 Apr 2026 - 14:15

100

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Rudin's Real and Complex Analysis, Section 9.16

Published on 12 Apr 2026 - 9:14

92

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Fourier coefficients of sin(1/k), i.e. essential discontinuity

Published on 17 Apr 2026 - 0:46

86

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$f \in L^1(G) \cap B(G) \implies \hat f \in L^1(\hat G) $

Published on 26 Mar 2026 - 9:17

75

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Equality using Parseval's theorem?

Published on 09 Apr 2026 - 6:03

143

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Integrating powers of the Fejer kernel

Published on 09 Apr 2026 - 8:05

157

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2 Questions in proof of theorem 11.17 Apostol ( Mathematical Analysis)

Published on 16 Apr 2026 - 19:39

371

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How can I expand function into a series of exponentially decaying (co)sines?

Published on 12 Apr 2026 - 15:31

33

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Wrongly computed Fourier series coefficients

Published on 12 Apr 2026 - 3:01

24

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What is the function that is either invariant or shifted if its input is the output of any function varying in input scale?

Published on 15 Apr 2026 - 14:34

57

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L^1-Fourier Transform is not bounded below

Published on 15 Apr 2026 - 10:26

279

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Proving that $\sin(x)\sin(nx)/x^2$ has $L^1$ norm tending to infinity

Published on 16 Apr 2026 - 1:35

List Question

Continuous extension of a bounded linear operator in Fourier multiplier definition.

The product of $\phi$ is a Schwartz function with $m \in L^\infty$.

Statements about the Fourier series

Continuous spectrum of Schrödinger operator

Rudin's Real and Complex Analysis, Section 9.16

Fourier coefficients of sin(1/k), i.e. essential discontinuity

$f \in L^1(G) \cap B(G) \implies \hat f \in L^1(\hat G) $

Equality using Parseval's theorem?

Integrating powers of the Fejer kernel

2 Questions in proof of theorem 11.17 Apostol ( Mathematical Analysis)

How can I expand function into a series of exponentially decaying (co)sines?

Wrongly computed Fourier series coefficients

What is the function that is either invariant or shifted if its input is the output of any function varying in input scale?

L^1-Fourier Transform is not bounded below

Proving that $\sin(x)\sin(nx)/x^2$ has $L^1$ norm tending to infinity

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