GREECHIE DIAGRAMS, NONEXISTENCE OF MEASURES IN QUANTUM LOGICS, AND KOCHEN-SPECKER-TYPE CONSTRUCTIONS

摘要

We use Greechie diagrams to construct finite orthomodular lattices ''realizable'' in the orthomodular lattice of subspaces in a three-dimensional Hilbert space such that the set of two-valued states is not ''large'' (i.e., full, separating, unital, nonempty, resp.). We discuss the number of elements of such orthomodular lattices, of their sets of (ortho)generators and of their subsets that do not admit a ''large'' set of two-valued states. We show connections with other results of this type. (C) 1996 American Institute of Physics. [References: 32]