3 citations · 3 across the 3 of their papers we have counts for
3 papers
math.FA2023
Two classes of operators related to the perturbation classes problem
Manuel González, Margot Salas-Brown
Let and be the strictly singular and the strictly cosingular operators acting between Banach spaces, and let and be the perturbation classes for the upper a…
math.FA2020★ 3 cited
The perturbation classes problem for subprojective and superprojective Banach spaces
Manuel González, Javier Pello, Margot Salas-Brown
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 a…
math.FA2014
Properties of Multiplication Operators on Köthe spaces
René Erlin Castillo, Julio C. Ramos Fernández, Margot Salas-Brown
We make an exhaustive study of the properties of multiplication operator acting on Köthe spaces. We characterize the multiplication operators, acting on Köthe spaces, which a…