Decrease of the lengths of the gaps in the spectrum of polynomial pencils

DOI10.1007/BF01157394zbMath0562.47013MaRDI QIDQ1056884

V. I. Feĭgin

Publication date: 1983

Published in: Mathematical Notes (Search for Journal in Brave)

zbMATH Keywords

decrease of the lengths of the gaps in the spectrum of polynomial pencils

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56)

Cites Work

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• Gaps in the Essential Spectrum of Even-Order Self-Adjoint Differential Operators

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