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...

Descripción completa

Detalles Bibliográficos
Autores Principales: González, Manuel, Pello, Javier, Salas-Brown, Margot
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