On set-valued metric projections, Hahn-Banach extension maps, and spherical image maps

DOI10.1215/S0012-7094-73-04029-5zbMath0267.41013MaRDI QIDQ2562986

Walter Pollul, Ivan Singer, Frank Deutsch

Publication date: 1973

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

Mathematics Subject Classification ID

Normed linear spaces and Banach spaces; Banach lattices (46B99) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65)

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