Discreteness of the spectrum of first-order normal differential operators

zbMath1014.47017MaRDI QIDQ1593869

Zameddin I. Ismailov

Publication date: 28 January 2001

Published in: Doklady Mathematics (Search for Journal in Brave)

zbMATH Keywords

minimal operatorfirst-order differential-operatorgeneral theory of differential operatorslinear lower positive definite self-adjoint operator in Hilbert spacenormal extensions of an unbounded formally normal operator

Mathematics Subject Classification ID

General spectral theory of ordinary differential operators (34L05) General theory of ordinary differential operators (47E05) Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators (34L10)

Related Items (2)

Unnamed Item ⋮ Spectral analysis of some classes first-order normal differential operators

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