TY - BOOK AU - Singer,Ivan TI - Best approximation in normed linear spaces by elements of linear subspaces PY - 1970/// CY - Berlin PB - Springer-Verlag KW - Normed linear spaces KW - Approximation theory N1 - Translation of Cea mai buna aproximare in spatii vectoriale normate prin elemente din subspatii vectoriale; Bibliography : p. 393-403 ER -