articleTop 10% cited
On the variational principle
Journal of Mathematical Analysis and Applications · 1974 · Vol. 47(2) · pp. 324–353
Ivar Ekeland✉(Centre de Recherche en Mathématiques de la Décision)
Geometric Analysis and Curvature FlowsMathematicsDifferentiable functionGeodesicVariational principleMathematical analysisPartial derivativeEigenvalues and eigenvectorsPartial differential equationNonlinear systemMaximum principle
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References
On the subdifferentiability of convex functions
Proceedings of the American Mathematical Society · 1965 · 295 citations
Topological Methods in the Theory of Nonlinear Integral Equations.
American Mathematical Monthly · 1968 · 1,967 citations
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