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Algebraic Sum of Unbounded Normal Operators and the Square Root Problem of Kato

Toka Diagana
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Abstract

We prove that the algebraic sum of unbounded normal operators satisfies the square root problem of Kato under appropriate hypotheses. As application, we consider perturbed Schrodinger operators.

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Toka Diagana. 2003-05-14. Algebraic Sum of Unbounded Normal Operators and the Square Root Problem of Kato. https://arxiv.org/abs/math/0305204

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