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A VARIATIONAL CHARACTERIZATION OF THE BEST APPROXIMATION ELEMENT - MaRDI portal

A VARIATIONAL CHARACTERIZATION OF THE BEST APPROXIMATION ELEMENT

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Publication:4254023

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DOI10.1515/DEMA-1999-0112zbMath0932.41023OpenAlexW1507958885MaRDI QIDQ4254023

Sever Silvestru Dragomir

Publication date: 20 December 1999

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

Full work available at URL: https://doi.org/10.1515/dema-1999-0112

zbMATH Keywords

metric space convex set quadratic functional pre-Hilbert space best approximation element point of smoothness \(L^1\) space Chebychev set

Mathematics Subject Classification ID

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

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