Notes on a class of operators with the localized single-valued extension property

Authors

Keywords:

Localized single-valued extension property, quasi-nilpotent part, analytic core, Kato decomposition and quasi-Fredholm operators, semi-Browder operators and Riesz operators

Abstract

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.

References

P. Aiena: Fredholm and local spectral theory, with application to multipliers, Kluwer Academic Publishers, Dordrecht (2004).

P. Aiena, C. Trapani and S. Triolo: Svep and local spectral radius formula for unbounded operators, Filomat, 28 (2) (2014), 263–273.

P. Aiena, V. Muller: The localized single-valued extension property and Riesz operators, Proc. Amer. Math. Soc., 143 (5) (2015), 2051–2055.

P. Aiena, F. Burderi and S. Triolo: On commuting quasi-nilpotent operators that are injective, Math. Proc. R. Ir. Acad., 122A (2) (2022), 101–116.

P. Aiena, F. Burderi and S. Triolo: Further properties of an operator commuting with an injective > quasi-nilpotent operator, submitted.

J. P. Antoine, A.Inoue and C.Trapani: Partial *-algebras and their operator realizations, Kluwer Academic Publishers, Dordrecht (2002).

K. B. Laursen, M. M. Neumann: Introduction to local spectral theory, Clarendon Press, Oxford (2000).

S. Triolo: Note on commuting quasi-nilpotent unbounded operators, Adv. Oper. Theory, accepted.

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Published

15-12-2023

How to Cite

Triolo, S. (2023). Notes on a class of operators with the localized single-valued extension property. Modern Mathematical Methods, 1(1), 93–99. Retrieved from https://modernmathmeth.com/index.php/pub/article/view/4

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Articles