Abstract
This chapter is entirely devoted to nonnormal operators. By a nonnormal operator here, we obviously mean an operator which is not normal but not only that, that is, we mean in particular those operators which are in some sense connected or bear a certain resemblance to normal ones. Moreover, most of these classes coincide with normal operators on finite-dimensional spaces.
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Mortad, M.H. (2022). Nonnormal Operators. In: Counterexamples in Operator Theory. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-97814-3_14
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