Trigonometric Approximation of Signals (Functions) Belonging to the Lip(ξ(t),r),(r＞1)-Class by (E,q) (q＞0)-Means of the Conjugate Series of Its Fourier Series

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References

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[20] A. Zygmund, “Trigonometric Series, Vol. I,” 2nd Edition, Cambridge University Press, Cambridge, 1959.