Abstract critical point theorems and applications to some nonlinear problems with ”strong” resonance at infinity. (English) Zbl 0522.58012


58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces
35J60 Nonlinear elliptic equations
47J05 Equations involving nonlinear operators (general)
35J20 Variational methods for second-order elliptic equations
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