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Unbounded generalizations of the Fuglede-Putnam theorem and applications to the commutativity of self-adjoint operators
Published 25 Jan 2022 in math.FA | (2201.10604v1)
Abstract: In this article, we prove and disprove several generalizations of unbounded versions of the Fuglede-Putnam theorem. As applications, we give conditions guaranteeing the commutativity of a bounded self-adjoint operator with an unbounded closed symmetric operator.
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