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Sur les problèmes variationnels. (French) Zbl 0249.49004

##### 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