A PERTURBATION OF NORMAL OPERATORS ON A HILBERT SPACE

Takeshi Miura, Atsushi Uchiyama, Hirokazu Oka, Go Hirasawa, Sin-Ei Takahasi

Abstract


In this paper, Before we consider stability of normal operators, we first prove superstability for self-adjoint operators. Next we prove superstability of normal operators. That is, approximate normal operators are exact normal ones.

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ISSN: 1229-1595 (Print), 2466-0973 (Online)

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