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zbMath0658.47020MaRDI QIDQ3806228

V. R. Ol'shevskij

Publication date: 1988

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

change under small perturbations of the length of Jordan chains in classes of G-selfadjoint operators and selfadjoint operator functions sign characteristics

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56)

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