Abstract
To compute the eigenvalues of a perturbed discrete semibounded operator, systems are obtained for the first time in which the number of equations is equal to the multiplicity of the corresponding eigenvalues of the unperturbed operator.
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Original Russian Text © S.I. Kadchenko, I.I. Kinzina, 2006, published in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2006, Vol. 46, No. 7, pp. 1265–1272.
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Kadchenko, S.I., Kinzina, I.I. Computation of eigenvalues of perturbed discrete semibounded operators. Comput. Math. and Math. Phys. 46, 1200–1206 (2006). https://doi.org/10.1134/S0965542506070116
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DOI: https://doi.org/10.1134/S0965542506070116