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Corrigendum and addendum: “On the axiomatic theory of spectrum. II”. (English) Zbl 0914.47016

Summary: The main purpose of this paper is to correct the proof of Theorem 15 of the paper named in the title [the second and third author, ibid. 119, 129-147 (1996; Zbl 0857.47002)], concerned with the stability of the class of quasi-Fredholm operators under finite rank perturbations, and to answer some open questions raised there.

MSC:

47A53 (Semi-) Fredholm operators; index theories
47A55 Perturbation theory of linear operators
47A10 Spectrum, resolvent

Citations:

Zbl 0857.47002
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