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15
Math.TechQA.Club
2015-04-03 13:15:51
303
Views
Is there a closed-form of $\sum_{n=1}^{\infty} \frac{\sin(n)}{n^4}$
Published on
03 Apr 2015 - 13:15
#sequences-and-series
#fourier-series
118
Views
$\|fg\|_{A (\mathbb T)} \leq C \|f\|_{L^{2}} \|g\|_{A (\mathbb T)}$?
Published on
04 Apr 2015 - 7:24
#analysis
#fourier-analysis
#fourier-series
73
Views
Can we expect $\|fg\|_{\mathcal{F}L^{1}} \leq C \|f\|_{L^{2}(\mathbb R)} \|g\|_{\mathcal{F}L^{1}}$?
Published on
05 Apr 2026 - 1:47
#functional-analysis
#fourier-analysis
#fourier-series
#harmonic-analysis
43
Views
Do I have to transform the solution into $u(x, y)$?
Published on
10 Apr 2026 - 20:07
#ordinary-differential-equations
#partial-differential-equations
#fourier-series
145
Views
A trigonometric integral identity from Krylov's "Approximate Calculation of Integrals"
Published on
10 Apr 2026 - 1:02
#real-analysis
#trigonometry
#numerical-methods
#fourier-series
164
Views
A difficult trigonometric integral involving absolute value
Published on
11 Apr 2026 - 11:52
#integration
#trigonometry
#definite-integrals
#fourier-series
#absolute-value
272
Views
Writing a Fourier series of a $2\pi$-periodic function.
Published on
09 Apr 2026 - 14:52
#analysis
#fourier-series
144
Views
Show that $\widehat{f}(n)$ is zero for odd $n$
Published on
07 Apr 2015 - 17:41
#analysis
#proof-verification
#fourier-series
198
Views
Show that the Fourier series is $\frac{8}{\pi} \sum_{k \;odd \ge 1} \frac{sin(k \theta)}{k^3} $
Published on
07 Apr 2015 - 18:32
#fourier-series
75
Views
Compute the Fourier series of a piecewise function.
Published on
07 Apr 2015 - 19:27
#fourier-series
59
Views
ODE with finite Fourier expansion periodic coefficients
Published on
11 Apr 2026 - 1:50
#ordinary-differential-equations
#fourier-analysis
#fourier-series
171
Views
Table of Fourier series
Published on
08 Apr 2015 - 16:16
#reference-request
#fourier-series
706
Views
Chladni patterns
Published on
11 Apr 2026 - 22:47
#fourier-series
360
Views
Solve differential equation using fourier series
Published on
10 Apr 2026 - 21:50
#real-analysis
#ordinary-differential-equations
#fourier-series
3.9k
Views
Integral using Parseval's Theorem
Published on
09 Apr 2015 - 12:06
#definite-integrals
#fourier-analysis
#fourier-series
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