The perturbation classes problem for subprojective and superprojective Banach spaces
We show that the perturbation class for the upper semi-Fredholm operators between two Banach spaces X and Y coincides with the strictly singular operators when X is subprojective and that the perturbation class for the lower semi-Fredholm operators coincides with the strictly cosingular operators wh...
Autores Principales: | , , |
---|---|
Formato: | Artículo (Article) |
Lenguaje: | Inglés (English) |
Publicado: |
Elsevier
2020
|
Materias: | |
Acceso en línea: | https://repository.urosario.edu.co/handle/10336/26016 https://doi.org/10.1016/j.jmaa.2020.124191 |