Orthogonality of elements to a sum of subspaces

DOI10.1007/BF01159194zbMath0432.46019OpenAlexW2314807945MaRDI QIDQ1138759

T. V. Andreeva

Publication date: 1980

Published in: Mathematical Notes (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01159194

zbMATH Keywords

best approximationorthogonality

Mathematics Subject Classification ID

Geometry and structure of normed linear spaces (46B20) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Duality and reflexivity in normed linear and Banach spaces (46B10)

Cites Work

• Uniqueness of Hahn-Banach Extensions and Unique Best Approximation
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