The basis property of the root functions of second-order differential operators.
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Publication:1595677
zbMath1050.34530MaRDI QIDQ1595677
Publication date: 13 February 2001
Published in: Doklady Mathematics (Search for Journal in Brave)
General theory of ordinary differential operators (47E05) Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators (34L10)
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