scientific article
zbMath1261.58006MaRDI QIDQ3144811
Publication date: 8 December 2012
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
mountain pass theoremEkeland variational principleminimax theoremsaddle point theoremmountain pass point
Variational methods involving nonlinear operators (47J30) Fixed-point theorems (47H10) Fixed-point and coincidence theorems (topological aspects) (54H25) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Variational principles in infinite-dimensional spaces (58E30) Fixed-point theorems on manifolds (58C30) Perturbations of nonlinear operators (47H14) Measures, integration, derivative, holomorphy (all involving infinite-dimensional spaces) (46G99)
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