This article demonstrates the permanence of the localized single-valued extension property under specific perturbations for unbounded operators, indicating its limitations.
This article concerns the permanence of the single valued extension property at a point under suitable perturbations for an unbounded operator T on a particular integrity domain. While this property is, in general, not preserved under sums and products of commuting operators.
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Salvatore Triolo (2023) studied this question.
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