The distance from the holomorphically decomposable Fredholm spectrum

Authors

  • Abdelaziz Tajmouati Sidi Mohamed Ben Abdellah University Faculty of Sciences Dhar Al Mahraz
  • Mohamed Baba Mohamed Ahmed Sidi Mohamed Ben Abdellah University Faculty of Sciences Dhar Al Mahraz
  • Abdeslam El Bakkali Chouaib Doukkali University Faculty of Sciences Department of Mathematics

DOI:

https://doi.org/10.5269/bspm.v38i4.40247

Keywords:

Fredholm operator, distance spectrum, holomorphically decomposable Fredholm operator

Abstract

The class of holomorphically decomposable Fredholm operators was introduced by A. Tajmouati and A. El Bakkali since subclass of Saphar operators. Several authors have been interested in the distance of spectrum associated with the different classes. Especially C. Schmöeger has calculated the distance of Saphar spectrum. For this reason, in this paper, we establish the distance of the holomorphically decomposable Fredholm spectrum.

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Published

2019-03-10

Issue

Vol. 38 No. 4 (2020)

Section

Research Articles

License

When the manuscript is accepted for publication, the authors agree automatically to transfer the copyright to the (SPM).

The journal utilize the Creative Common Attribution (CC-BY 4.0).

 

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