Existence of good and best approximation on unbounded domains by exponential sums in several independent variables

DOI10.1016/0021-9045(77)90083-1zbMath0395.41009OpenAlexW2047805000MaRDI QIDQ1252982

David W. Kammler

Publication date: 1977

Published in: Journal of Approximation Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0021-9045(77)90083-1

zbMATH Keywords

Best Approximation On Unbounded Domains By Exponential SumsExistence TheoremsGood ApproximationWeierstrass Density Problem

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Trigonometric and exponential sums (general theory) (11L03) Approximation by other special function classes (41A30)

Cites Work

• Unnamed Item
• Approximation with sums of exponentials in \(L_p[0,\infty)\)
• Existence of best approximations by exponential sums in several independent variables
• The Bernstein Approximation Problem

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