Critical points of convex perturbations of some indefinite quadratic forms and semilinear boundary value problems at resonance (Q1124057)

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scientific article; zbMATH DE number 4111224
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Critical points of convex perturbations of some indefinite quadratic forms and semilinear boundary value problems at resonance
scientific article; zbMATH DE number 4111224

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    Critical points of convex perturbations of some indefinite quadratic forms and semilinear boundary value problems at resonance (English)
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    1986
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    dual least action principle
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    critical point
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    periodic solution
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    Hamiltonian systems
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    semilinear beam equations
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    averaging method
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