Saphar, Pierre Hypothèse d’approximation à l’ordre \(p\) dans les espaces de Banach et approximation d’applications \(p\) absolument sommantes. Proc. internat. Sympos. partial diff. Equ. Geometry normed lin. Spaces II. (French) Zbl 0257.46108 Isr. J. Math. 13, 379-399 (1972). Reviewer: Pierre Saphar MSC: 46M05 47B10 47L10 41A65 PDFBibTeX XML Full Text: DOI
Johnson, William B. A complementably universal conjugate Banach space and its relation to the approximation problem. Proc. internat. Sympos. partial diff. Equ. Geometry normed lin. Spaces II. (English) Zbl 0252.46024 Isr. J. Math. 13, 301-310 (1972). MSC: 46B10 41A65 46B15 PDFBibTeX XML
Collatz, L. Approximation by functions of fewer variables. (English) Zbl 0249.41020 Conf. Theory ordinary partial diff. Equ., Dundee/Scotland 1972, Lect. Notes Math. 280, 16-31 (1972). MSC: 41A63 35-XX 45-XX PDFBibTeX XML