Cardinality of the metric projection on typical compact sets in Hilbert spaces

DOI10.1017/S0305004198003193zbMath0923.46022OpenAlexW2052304346MaRDI QIDQ4237712

Francesco S. de Blasi, Tudor I. Zamfirescu

Publication date: 25 October 1999

Published in: Mathematical Proceedings of the Cambridge Philosophical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1017/s0305004198003193

zbMATH Keywords

metric projection mapping

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Characterizations of Hilbert spaces (46C15) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Uniqueness of best approximation (41A52)

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