scientific article

zbMath0581.58010MaRDI QIDQ3702984

Michel Willem, David Goldstein Costa

Publication date: 1984

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

Ljusternik-Schnirelman theorysine-Gordon equationminimax methodsinvariant functionalsnonlinear Dirichlet problemdual least action principleperiodic solutions of a nonlinear vibrating string

Mathematics Subject Classification ID

Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Variational principles in infinite-dimensional spaces (58E30) Partial differential equations of mathematical physics and other areas of application (35Q99) Boundary value problems on manifolds (58J32) Hyperbolic equations on manifolds (58J45)

Related Items (4)

Topological characteristics of extremals of variational problems ⋮ Multiple critical points of invariant functionals and applications ⋮ Lusternik-Schnirelman method for functionals invariant with respect to a finite group action ⋮ Some remarks on the Lyusternik-Schnirelman method for non-differentiable functionals invariant with respect to a finite group action

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