5.—Semi-bounded Dirichlet Integrals and the Invariance of the Essential Spectra of Self-adjoint Operators

DOI10.1017/S008045410001253XzbMath0349.47015OpenAlexW1931209301MaRDI QIDQ4119668

W. Desmond Evans

Publication date: 1976

Published in: Proceedings of the Royal Society of Edinburgh: Section A Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1017/s008045410001253x

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) General theory of partial differential operators (47F05) Second-order elliptic equations (35J15)

Cites Work

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• On the essential spectrum
• Hamiltonians defined as quadratic forms
• On the Essential Spectrum of Second Order Degenerate Elliptic Operators

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