Proximinality and co-proximinality in metric linear spaces

DOI10.1515/umcsmath-2015-0014zbMath1321.41044OpenAlexW4233023457MaRDI QIDQ2517161

Sahil Gupta, Tulsi Dass Narang

Publication date: 17 August 2015

Published in: Annales Universitatis Mariae Curie-Skłodowska. Sectio A. Mathematica (Search for Journal in Brave)

Full work available at URL: https://semanticscholar.org/paper/1485a35cfb69dfebfac27d048f266c83f3b398fb

zbMATH Keywords

best approximationChebyshev setproximinal setbest coapproximationco-Chebyshev setco-proximinal set

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Uniqueness of best approximation (41A52) Convexity properties of solutions to PDEs with constant coefficients (35E10)

Related Items (2)

Best approximation in metric spaces ⋮ Unnamed Item

Cites Work

• Best coapproximation in normed linear spaces
• A note on best and best simultaneous approximations
• Some results concerning proximinality and co-proximinality
• Quasi-orthogonality of the best approximant sets
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