Freud's work in constructive function theory
نویسندگان
چکیده
منابع مشابه
Freud’s Work in Constructive Function Theory
These were not the first estimates for E,* but they were the cleanest. Only a year earlier, Lebesguc had given estimates for approximation by the nth Fourier sums; but the latter contain logarithms which are absent in (3). As natural as (3) seems, there is still the question whether it is in some sense best possible. Bernstein [2] showed that this is the case, in at least two different ways. He...
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ژورنال
عنوان ژورنال: Journal of Approximation Theory
سال: 1986
ISSN: 0021-9045
DOI: 10.1016/0021-9045(86)90083-3