Divisible, unstable and zero elements of the spectrum in the theory of singular perturbations.

zbMath1053.47503MaRDI QIDQ1308137

V. Pereyra

Publication date: 22 November 1999

Published in: Matematychni Studiï (Search for Journal in Brave)

zbMATH Keywords

perturbed differential equation

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Applications of operator theory to differential and integral equations (47N20)

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