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Solutions of asymptotically linear operator equations via Morse theory. (English) Zbl 0444.58008

58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces
58J32 Boundary value problems on manifolds
58J10 Differential complexes
58J45 Hyperbolic equations on manifolds
37J99 Dynamical aspects of finite-dimensional Hamiltonian and Lagrangian systems
35L05 Wave equation
35J65 Nonlinear boundary value problems for linear elliptic equations
Full Text: DOI
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