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>On the number of an eigenvalue of a general nonlinear self-adjoint spectral problem for systems of ordinary differential equations
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On the number of an eigenvalue of a general nonlinear self-adjoint spectral problem for systems of ordinary differential equations
In the case of a general nonlinear self-adjoint spectral problem for systems of ordinary differential equations with boundary conditions independent of the spectral parameter, we introduce the notion of the number of an eigenvalue. Methods for the computation of the numbers of eigenvalues lying in a given range of the spectral parameter and for finding the eigenvalue with a given number, which were earlier suggested by the author for Hamiltonian systems, are generalized to the considered problem. We introduce the notion of an index of a problem for a general nontrivially solvable linear homogeneous self-adjoint boundary value problem.[PUBLICATION ABSTRACT]
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