A generalization of parallel addition.
A note on Banach algebras that are not isomorphic to a group algebra.
A note on extreme contractions on -spaces
A unified approach to the strong approximation property and the weak bounded approximation property of Banach spaces
We consider convex versions of the strong approximation property and the weak bounded approximation property and develop a unified approach to their treatment introducing the inner and outer Λ-bounded approximation properties for a pair consisting of an operator ideal and a space ideal. We characterize this type of properties in a general setting and, using the isometric DFJP-factorization of operator ideals, provide a range of examples for this characterization, eventually answering a question...
Approximation by Positive Operators.
Approximations of contraction operators on - I