scientific article

zbMath0575.46024MaRDI QIDQ3695821

Gordon G. Johnson

Publication date: 1983

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

\(G\)-systems for real inner product spacesunique nearest point

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Uniqueness of best approximation (41A52) Convex sets in topological linear spaces; Choquet theory (46A55)

Related Items (3)

The closure in a Hilbert space of a prehilbert space Chebyshev set that fails to be a Chebyshev set ⋮ A nonconvex set which has the unique nearest point property ⋮ Closure in a Hilbert space of a prehilbert space Chebyshev set

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