Strong uniqueness in restricted rational approximation

DOI10.1006/jath.1996.3030zbMath0877.41014OpenAlexW2088884465MaRDI QIDQ1356644

Chong Li, G. Alistair Watson

Publication date: 6 November 1997

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

Full work available at URL: https://semanticscholar.org/paper/69f79ecae195f3dfcd9d16b1355b1f0d63b5ac68

zbMATH Keywords

best approximation

Mathematics Subject Classification ID

Approximation by rational functions (41A20) Uniqueness of best approximation (41A52)

Cites Work

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• Uniform approximation by rational functions having restricted denominators
• Unicity and strong unicity in approximation theory
• Chebyshev approximation by rationals with constrained denominators
• Characterization of a best and a unique best approximation from constrained rationals
• On the continuity of the nonlinear Tschebyscheff operator
• Strong Unicity of Best Approximations in L ∞ (S, Σ, μ)

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