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zbMath0646.47013MaRDI QIDQ3790139

S. V. Kurochkin

Publication date: 1987

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

closed operator on a Hilbert space simple isolated eigenvalue

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)

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