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Publication:3736380
zbMath0601.47017MaRDI QIDQ3736380
Publication date: 1986
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
principal axis theoremBDF theorya necessary and sufficient condition that two essentially normal operators be essentially unitarily equivalent is that they have the same essential spectrum and the same index function
Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Structure theory of linear operators (47A65) Canonical forms, reductions, classification (15A21)
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