Extension of a Function from the Exterior of an Interval to a Positive-Definite Function on the Entire Axis and an Approximation Characteristic of the Class W_M^{r,\beta}

Author： Zastavnyi V. P.  

Publisher： Springer Publishing Company

ISSN： 0041-5995

Source： Ukrainian Mathematical Journal, Vol.55, Iss.7, 2003-07, pp. : 1189-1197

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