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15
Math.TechQA.Club
2026-04-09 14:33:48
262
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Fourier Theorem
Published on
09 Apr 2026 - 14:33
#fourier-series
296
Views
Fourier series with initial conditions
Published on
11 Apr 2026 - 15:45
#ordinary-differential-equations
#fourier-analysis
#fourier-series
324
Views
Parseval's theorem rewritten in Fourier series
Published on
09 Apr 2026 - 11:59
#fourier-series
#parsevals-identity
1.6k
Views
Fourier series proving $\sum \frac{1}{n^4} = \frac{\pi^4}{90}$
Published on
12 Apr 2026 - 12:04
#fourier-analysis
#fourier-series
85
Views
From $\frac{1}{2}+\sum_{n=1}^\infty \frac{4}{\pi^2 n^2}\cos(2\pi nx)=(1-2x)^2$ to $\sum_{n=1}^\infty \frac{1}{n^4}=\frac{\pi^4}{90}$
Published on
14 Apr 2026 - 22:54
#real-analysis
#fourier-series
101
Views
Calculating Fourier expansion without using $\frac{a_o}{2}+\sum_{n=1}^{\infty} (a_n\cos(\frac{2n\pi}{T})t+b_n\sin(\frac{2n\pi}{T})t$
Published on
16 Apr 2026 - 1:25
#calculus
#fourier-series
336
Views
Fourier series of a piecewise continuous (constant) function. Is my solution correct?
Published on
12 Apr 2026 - 15:18
#calculus
#convergence-divergence
#fourier-series
372
Views
Finding Fourier Coefficients given $f(x) = \left\{ \begin{array}{rcl} -4\,x & \text{if} & -\pi<x<0 \\ 4\,x & \text{if} & 0<x<\pi \end{array}\right.$
Published on
16 Apr 2026 - 11:05
#fourier-series
840
Views
Use separation of variables to solve BVP with mixed boundary conditions.
Published on
14 Apr 2026 - 9:30
#calculus
#partial-differential-equations
#fourier-series
#boundary-value-problem
94
Views
Lemma 1.4.3 A First Course in Harmonic Analysis
Published on
14 Apr 2026 - 0:44
#summation
#fourier-analysis
#fourier-series
#harmonic-analysis
#characteristic-functions
52
Views
simplifying an expression of the complex exponential
Published on
12 Apr 2026 - 12:56
#complex-analysis
#complex-numbers
#fourier-series
35
Views
Derive Factor in Fourier Series
Published on
10 Apr 2026 - 1:21
#fourier-series
438
Views
Limit is $0$ uniformly for fourier coefficients
Published on
14 Apr 2026 - 21:06
#fourier-analysis
#fourier-series
113
Views
Theorem 2.3.2 A First Course in Harmonic Analysis
Published on
14 Apr 2026 - 13:33
#fourier-analysis
#hilbert-spaces
#fourier-series
#harmonic-analysis
#complete-spaces
94
Views
calculating sum of a series using fourier series
Published on
11 Apr 2026 - 0:32
#fourier-series
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