scientific article; zbMATH DE number 4002901

zbMATH Open0618.49001MaRDI QIDQ4727735

Ivar Ekeland

Publication date: 1987

Title of this publication is not available (Why is that?)

zbMATH Keywords

periodic solutionscritical point theorynonlinear Hamiltonian systemsClarke's dual action functional

Mathematics Subject Classification ID

Periodic solutions to ordinary differential equations (34C25) Nonlinear systems in control theory (93C10) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Variational principles in infinite-dimensional spaces (58E30) Methods involving semicontinuity and convergence; relaxation (49J45) Existence theories for optimal control problems involving ordinary differential equations (49J15) Dynamical aspects of finite-dimensional Hamiltonian and Lagrangian systems (37J99) Control/observation systems governed by ordinary differential equations (93C15) Variational problems in applications to the theory of geodesics (problems in one independent variable) (58E10)

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