Polynomial approximation with Pollaczeck-Laguerre weights on the real semiaxis. A survey
نویسندگان
چکیده
منابع مشابه
Pointwise estimates for polynomial approximation on the semiaxis
We state some pointwise estimates for the rate of weighted approximation of a continuous function on the semiaxis by polynomials. Similarly to a previous result in C[−1, 1] due to Z. Ditzian and D. Jiang [2], we consider weighted φ moduli of continuity, where 0 ≤ λ ≤ 1. The results we obtain bridge the gap between an old pointwise estimate by V.M. Fedorov [4] and the recent norm estimates.
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ژورنال
عنوان ژورنال: ETNA - Electronic Transactions on Numerical Analysis
سال: 2018
ISSN: 1068-9613,1068-9613
DOI: 10.1553/etna_vol50s36