On Classes of Projections in a von Neumann Algebra

Trond Digernes
1972 Mathematica Scandinavica  
Classes of projections in a von-Neumann algebra are studied, and thereby fairly general conditions for unitary implementation (of isomorphisms) are obtained. By introducing a relation between classes of projections we also get a unified proof and generalizations of some results in the spatial theory for von-Neumann algebras.
doi:10.7146/math.scand.a-11424 fatcat:xhtqua77j5cbdnj5tff4hr3j4a