scientific article; zbMATH DE number 4118738
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Publication:4732734
zbMath0683.34012MaRDI QIDQ4732734
Publication date: 1989
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
General theory of ordinary differential operators (47E05) Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces (46B15) Special ordinary differential equations (Mathieu, Hill, Bessel, etc.) (34B30) Ordinary differential operators (34L99) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)
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