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arxiv: 1901.09435 · v1 · pith:7XUTEE2Fnew · submitted 2019-01-27 · 🧮 math.FA · math.OA

When Nilpotence Implies Normality of Bounded Linear Operators

classification 🧮 math.FA math.OA
keywords boundedlinearnilpotentoperatorscaseconditionsconsideredequivalently
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In this paper, we give conditions forcing nilpotent matrices (and bounded linear operators in general) to be null or equivalently to be normal. Therefore, a non-zero operator having e.g. a positive real part is never nilpotent. The case of quasinilpotence is also considered.

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