Difference f(B)-f(A) for unbounded self-adjoint operators in perturbation theory

DOI10.1007/BF01839619zbMath0612.47022OpenAlexW2075039995MaRDI QIDQ1088141

Yuliya B. Farforovskaya

Publication date: 1987

Published in: Journal of Soviet Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01839619

zbMATH Keywords

unbounded selfadjoint operators

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25)

Cites Work

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• An estimate of the norm |f(B)-f(A)| for self-adjoint operators A and B
• Continuity of the map $S \to \left| S \right|$ for linear operators

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