Essential spectra of singular Hamiltonian differential operators of arbitrary order under a class of perturbations

DOI10.1111/sapm.12388zbMath1489.34121OpenAlexW3159972760MaRDI QIDQ5011719

Chen Yang, Huaqing Sun

Publication date: 27 August 2021

Published in: Studies in Applied Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1111/sapm.12388

zbMATH Keywords

perturbationessential spectrumHamiltonian systemsingular sequence

Mathematics Subject Classification ID

General spectral theory of ordinary differential operators (34L05) Perturbation theory of linear operators (47A55) General theory of ordinary differential operators (47E05)

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