Singular perturbation of simple eigenvalues
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Publication:1238123
DOI10.1216/RMJ-1976-6-4-575zbMath0357.47013OpenAlexW1989899354MaRDI QIDQ1238123
Publication date: 1976
Published in: Rocky Mountain Journal of Mathematics (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1216/rmj-1976-6-4-575
Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) Ordinary differential operators (34L99)
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