Uniform approximation by elementary operators
arXiv:0902.0285
Abstract
On a separable C*-algebra A every (completely) bounded map, which preserves closed two sided ideals, can be approximated uniformly by elementary operators if and only if A is a finite direct sum of C*-algebras of continuous sections vanishing at infinity of locally trivial C*-bundles of finite type.
16 pages, accepted to PEMS