Geodesic
Localization of the spectrum of eigenvalue problems nonlinear in the spectral parameter
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 5, pp. 780-782 Cet article a éte moissonné depuis la source Math-Net.Ru

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An approach which enables one to localize the spectrum of some classes of eigenvalue problems nonlinear in the spectral parameters is proposed and proved. The application of the proposed approach to some test examples is described. 
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V. T. Zakharchuk; N. P. Savenkova. Localization of the spectrum of eigenvalue problems nonlinear in the spectral parameter. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 5, pp. 780-782. http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_5_a12/

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