Ekeland, Ivar Sur les problèmes variationnels. (French) Zbl 0249.49004 C. R. Acad. Sci., Paris, Sér. A 275, 1057-1059 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 92 Documents MSC: 49J27 Existence theories for problems in abstract spaces 46A19 Other “topological” linear spaces (convergence spaces, ranked spaces, spaces with a metric taking values in an ordered structure more general than \(\mathbb{R}\), etc.) 49J20 Existence theories for optimal control problems involving partial differential equations PDF BibTeX XML Cite \textit{I. Ekeland}, C. R. Acad. Sci., Paris, Sér. A 275, 1057--1059 (1972; Zbl 0249.49004)