Dual operator systems
arXiv:0807.4250 · doi:10.1112/blms/bdq103
Abstract
We characterize weak* closed unital vector spaces of operators on a Hilbert space . More precisely, we first show that an operator system, which is the dual of an operator space, can be represented completely isometrically and weak* homeomorphically as a weak* closed operator subsystem of . An analogous result is proved for unital operator spaces. Finally, we give some somewhat surprising examples of dual unital operator spaces.
10 pages