A Characterization of the State Space of Quantum Mechanics
A note on states of von Neumann algebras
The author proves that on a von Neumann albebra (possibly of uncountable cardinality) there exists a family of states having mutually orthogonal supports (projections) converging to the identity operator.
A survey on representations of the unitary group U(∞)
Action moyennable d'un groupe localement compact sur une algebre de von Neumann.
Affine semigroups and second duals.
An abstract characterization of ...-conditional expectations.