scientific article; zbMATH DE number 810884
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Publication:4852292
zbMath0870.47016MaRDI QIDQ4852292
Publication date: 1 September 1997
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empty point spectrumpower bounded operatoressentially normal roots of spectral continuous normal operators are normalset of normal operatorsspectral continuous
Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Perturbation theory of linear operators (47A55)
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