共 50 条
- [1] SETS OF BEST APPROXIMATION IN CERTAIN CLASSES OF NORMED SPACES NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1971, 18 (01): : 169 - &
- [2] GENERALIZED POLYNOMIAL APPROXIMATION IN CERTAIN SEMI-NORMED SPACES CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES, 1975, 18 (04): : 523 - 527
- [6] Best approximation in normed linear spaces EURASIAN MATHEMATICAL JOURNAL, 2011, 2 (04): : 67 - 72
- [7] ON CERTAIN CLASSES OF NORMED LINEAR-SPACES REVUE ROUMAINE DE MATHEMATIQUES PURES ET APPLIQUEES, 1984, 29 (08): : 695 - 701
- [9] Approximation Numbers of Operators on Normed Linear Spaces Integral Equations and Operator Theory, 2009, 65