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Singular perturbations of finite rank. Point spectrum

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Abstract

We establish necessary and sufficient conditions for the appearance of an additional point spectrum under singular perturbations of finite rank.

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Authors
  1. V. D. Koshmanenko
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  2. O. V. Samoilenko
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Additional information

Institute of Mathematics, Ukrainian Academy of Sciences, Kiev. Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 49, No. 9, pp. 1186–1194, September, 1997.

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Koshmanenko, V.D., Samoilenko, O.V. Singular perturbations of finite rank. Point spectrum. Ukr Math J 49, 1335–1344 (1997). https://doi.org/10.1007/BF02487341

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  • DOI: https://doi.org/10.1007/BF02487341

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