Decomposition Theorem for State Property Systems
  We prove a decomposition theorem for orthocomplemented state property systems. More specifically we prove that an orthocomplemented state property system is isomorphic to the direct union of the non classical components of this state property system over the state space of the classical state property system of this state property system. 
Diederik Aerts, Didier Deses and Bart D'Hooghe