Continuous selections for metric projections

Continuous Selections. I

Ernest Michael · Annals of Mathematics · 1956 · 1.4K citations

Extension of compact operators

Joram Lindenstrauss · Memoirs of the American Mathematical Society · 1964 · 341 citations

Natural Sciences, Architectural Representation, Representation Theory +5

Approximation of functions

A. Zygmund · Journal of the Franklin Institute · 1966 · 263 citations

Uniqueness of Hahn-Banach extensions and unique best approximation.

R. R. Phelps · Transactions of the American Mathematical Society · 1960 · 138 citations · Full text

Natural Sciences, Mathematics, Representation Theory +9

Continuity of the set-valued metric projection

Jörg Blatter, Peter D. Morris, Daniel Wulbert · Mathematische Annalen · 1968 · 68 citations

Natural Sciences, Mathematics, Set Theory +6