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Topological results on a certain class of functionals and application. (English) Zbl 0499.35050

35J65 Nonlinear boundary value problems for linear elliptic equations
35A15 Variational methods applied to PDEs
49J45 Methods involving semicontinuity and convergence; relaxation
Full Text: DOI
[1] \scA. Bahri and H. Berestycki, A perturbation method in critical point theory and applications, to appear. · Zbl 0476.35030
[2] Krasnosels’kii, M.A., Topological methods in non-linear integral equations, (1964), Mac-Millan New York
[3] Rabinowitz, P.H., Free vibrations for a semi-linear wave equation, Comm. pure. appl. math., 31, 31-68, (1978) · Zbl 0341.35051
[4] Rabinowitz, P.H., Some minimax theorems and applications to nonlinear partial differential equations, () · Zbl 0152.10003
[5] Dold, A., Lectures on algebraic topology, (1972), Springer-Verlag New York · Zbl 0234.55001
[6] Ambrosetti, A.; Rabinowitz, P.H., Dual variational methods in critical point theory and applications, J. funct. anal., 14, 349, (1973) · Zbl 0273.49063
[7] Milnor, J., Lectures on the h-cobordism theorem, (1965), Princeton Univ. Press Princeton, N.J
[8] Borsuk, K., ()
[9] Switzer, R.M., Algebraic topology-homotopy and homology, (1975), Springer-Verlag New York · Zbl 0305.55001
[10] Bessaga, C.; Pelczynski, A., ()
[11] Kuiper, N.H., The differentiable topology of separable Banach manifolds, University of Amsterdam. report 70-07, (1970) · Zbl 0193.24001
[12] Rabinowitz, P.H., Variational methods for non-linear eigenvalue problems, () · Zbl 1048.37055
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