CHARACTERIZATIONS OF ELEMENTS OF BEST APPROXIMATION AND ε-APPROXIMATION IN NON-ARCHIMEDEAN NORMED SPACES

DOI10.1515/DEMA-1997-0307zbMATH Open0891.41020OpenAlexW2782986616MaRDI QIDQ4373954

T. D. Narang

Publication date: 4 February 1998

Published in: Demonstratio Mathematica (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1515/dema-1997-0307

zbMATH Keywords

approximationbest approximationsimultaneous characterization

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Functional analysis over fields other than (mathbb{R}) or (mathbb{C}) or the quaternions; non-Archimedean functional analysis (46S10) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65)

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