An Oscillation Theorem for Continuous Spectra

DOI10.1073/pnas.33.12.376zbMath0031.02704OpenAlexW2093018738WikidataQ33749426 ScholiaQ33749426MaRDI QIDQ5787172

Philip Hartman, Aurel Wintner

Publication date: 1947

Published in: Proceedings of the National Academy of Sciences (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1073/pnas.33.12.376

zbMATH Keywords

Ordinary differential equations

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On dichotomies for solutions of \(n\)-th order linear differential equations ⋮ On subordinacy and analysis of the spectrum of one-dimensional Schrödinger operators ⋮ Real-parameter square-integrable solutions and the spectrum of differential operators ⋮ Spectra of a class of non-symmetric operators in Hilbert spaces with applications to singular differential operators ⋮ On essential spectra of singular linear Hamiltonian systems ⋮ Continuous spectrum and square-integrable solutions of differential operators with intermediate deficiency index ⋮ Simplicity and spectrum of singular Hamiltonian systems of arbitrary order ⋮ Essential spectrum of singular discrete linear Hamiltonian systems ⋮ Zur Spektraltheorie von Sturm-Liouville-Operatoren

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