Characterization of a best and a unique best approximation from constrained rationals

DOI10.1016/0898-1221(95)00085-2zbMath0840.41020OpenAlexW1977405871MaRDI QIDQ1904159

Yanyan Li

Publication date: 18 December 1995

Published in: Computers \& Mathematics with Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0898-1221(95)00085-2

zbMATH Keywords

rational approximation

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Approximation by rational functions (41A20)

Related Items (4)

Strong uniqueness in restricted rational approximation ⋮ Connectedness and other geometric properties of suns and Chebyshev sets ⋮ Characterization and uniqueness of nonlinear uniform approximation ⋮ Chebyshev approximation problem of multidimensional IIR digital filters in the frequency domain

Cites Work

• Constrained rational approximation
• Uniform approximation by rational functions having restricted denominators
• A minimax problem using generalized rational functions
• Unicity and strong unicity in approximation theory
• Chebyshev approximation by rationals with constrained denominators
• Chebyshev Approximation by Families with the Betweeness Property
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