Functions with many best L//2-approximations

DOI10.1016/0021-9045(81)90080-0zbMath0506.41026OpenAlexW2024872075MaRDI QIDQ1836822

Yanyan Li

Publication date: 1981

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

Full work available at URL: https://doi.org/10.1016/0021-9045(81)90080-0

zbMATH Keywords

local best approximationsglobal best approximationsmultiple nonunique approximations

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Uniqueness of best approximation (41A52)

Related Items (1)

Some properties of rational approximations of degree \((k,1)\) in the Hardy space \(H_2({\mathcal D})\)

Cites Work

• On the unicity of nonlinear approximation in smooth spaces
• On the numer of best approximations in certain non-linear families of functions
• On rational \(L_2\)-Approximation
• Approximation from a curve of functions
• Zur Mehrdeutigkeit bei der Approximation in der \(L_ p\)-Norm mit Hilfe rationaler Funktionen
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