The distance from the holomorphically decomposable Fredholm spectrum

Autores

  • 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

Palavras-chave:

Fredholm operator, distance spectrum, holomorphically decomposable Fredholm operator

Resumo

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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Publicado

2019-03-10

Edição

v. 38 n. 4 (2020)

Seção

Artigos

Licença

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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