Abstract
The problem of finding the minimal eigenvalue corresponding to a positive eigenfunction of the nonlinear eigenvalue problem for the ordinary differential equation with coefficients depending on a spectral parameter is investigated. This problem arises in modeling the plasma of radiofrequency discharge at reduced pressures. A necessary and sufficient condition for the existence of a minimal eigenvalue corresponding to a positive eigenfunction of the nonlinear eigenvalue problem is established. The original differential eigenvalue problem is approximated by the finite element method on a uniform grid. The convergence of approximate eigenvalue and approximate positive eigenfunction to exact ones is proved. Investigations of this paper generalize well known results for eigenvalue problems with linear dependence on the spectral parameter.
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Solov’ev, S.I., Solov’ev, P.S. Finite Element Approximation of the Minimal Eigenvalue of a Nonlinear Eigenvalue Problem. Lobachevskii J Math 39, 949–956 (2018). https://doi.org/10.1134/S199508021807020X
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DOI: https://doi.org/10.1134/S199508021807020X