4 papers
Derived functors associated to the ideal of compact operators in Banach spaces
Félix Cabello Sánchez, Jesús M. F. Castillo, Alberto Salguero-Alarcón +1
We compute the derived functors of (the functors associated to) the ideal of compact operators in Banach spaces and obtain new results about the extension and lifting of compact op…
Interpolation of Matrix Weighted Spaces and Commutator Estimates
Félix Cabello Sánchez, Willian Corrêa
We present a formula for the interpolation of matrix weighted spaces of vector valued functions via interpolation functors. We apply our formula to the particular case of interpola…
Accessible operators on ultraproducts of Banach spaces
Félix Cabello Sánchez
We address a question by Henry Towsner about the possibility of representing linear operators between ultraproducts of Banach spaces by means of ultraproducts of nonlinear maps. We…
A forgotten theorem of OrtyÅski, not far off
Félix Cabello Sánchez, Jesús M. F. Castillo, Yolanda Moreno Salguero
We combine techniques of OrtyÅski \cite{orty} and Moreno and Plichko \cite{moreplic} to show that, for , every subspace of having density character $\math…