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Showing 1 to 1 of 1 for “"trigonometric system"”.
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HILBERT SPACES AND FOURIER SERIES
<p>I give an overview of the basic theory of Hilbert spaces necessary to understand the convergence of the Fourier series for square integrable functions. I state the necessary theorems and definitions to understand the formulations of the problem in a Hilbert space framework, and then I give some …