Perturbation Ideals and Fredholm Theory in Banach Algebras

Authors

  • Tshikhudo Lukoto Department of Mathematics and Applied Mathematics, Private Bag X1106, University of Limpopo, Sovenga, 0727, South Africa.
  • Heinrich Raubenheimer Department of Mathematics and Applied Mathematics, University of Johannesburg, Auckland Park Campus, South Africa.

DOI:

https://doi.org/10.17398/2605-5686.37.1.91

Keywords:

Fredholm elements, Index theory, Perturbation ideals, (semi)regularities, Riesz elements

Abstract

In this paper we characterize perturbation ideals of sets that generate the familiar spectra in Fredholm theory.

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References

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Published

2022-06-01

Issue

Section

Operator Theory

How to Cite

Perturbation Ideals and Fredholm Theory in Banach Algebras. (2022). Extracta Mathematicae, 37(1), 91-110. https://doi.org/10.17398/2605-5686.37.1.91