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Vol 4 No 1
Pages:
54-62
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RUS
Research article
Articles

On the theory of trigonometric series

Authors:
N. M. Krylov
Date submitted:
1911-07-05
Date accepted:
1911-09-29
Date published:
1912-01-01

Abstract

When expanding “arbitrary” functions into series using the method of least squares, the coefficients of the series, as is known, are formed according to a very specific law, namely, the law of formation of the coefficient is the one that would take place in the case of uniform convergence of the series, i.e., in other words, the coefficients acquire the form of the so-called Fourier coefficients and the series will be the so-called Fourier series of the expandable functions, in the special case of expansion in trigonometric functions of the form (see article).

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