proposition 17.4 Least squares and Bessel's inequality

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proposition 17.4: Least squares and Bessel's inequality17.4definition 17.1: Fourier coefficients and Fourier series17.1lemma 17.2: Orthogonality of the harmonics17.2corollary 17.11: Uniform convergence for C^1 functions17.11theorem 17.34: Parseval's identity for series17.34proof : ch:15-fourier-integral-transforms@proof-3proofdefinition 17.25: Multiple Fourier series17.25lemma 17.6: Dirichlet kernel17.6lemma 17.15: A polynomial whose partial sum spikes at the origin17.15proposition 17.10: Smoothness and coefficient decay17.10proposition 17.86: The DFT is exact for a band-limited periodic signal17.86proposition 17.16: An explicit continuous function with a divergent Fourier series17.16theorem 17.3: Euler–Fourier coefficient formulas17.3theorem 17.47: Poisson summation17.47theorem 17.80: Sampling theorem17.80proof : ch:15-fourier-integral-transforms@proof-1prooftheorem 17.9: Dirichlet17.9proof : ch:15-fourier-integral-transforms@proof-9prooftheorem 17.22: Fejér17.22proposition 28.48: Modal energy28.48proof : ch:15-fourier-integral-transforms@proof-22proof

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typedirectionnode provenancewhere
depends_on Fourier coefficients and Fourier series declared parts/02-mathematical-methods/15-fourier-integral-transforms.tex:222
depends_on Orthogonality of the harmonics declared parts/02-mathematical-methods/15-fourier-integral-transforms.tex:222
depends_on Uniform convergence for $C^{1}$ functions declared parts/02-mathematical-methods/15-fourier-integral-transforms.tex:502
depends_on Parseval's identity for series declared parts/02-mathematical-methods/15-fourier-integral-transforms.tex:1381
proves ch:15-fourier-integral-transforms@proof-3 declared parts/02-mathematical-methods/15-fourier-integral-transforms.tex:225