New variants of the Bell-Kochen-Specker theorem
Adan Cabello, Jose M. Estebaranz, Guillermo Garcia Alcaine
Abstract
We discuss two new demonstrations of the Bell-Kochen-Specker theorem: a state-independent proof using 14 four-dimensional propositions, based on a suggestion made by Clifton, and a state-specific proof involving 5 propositions on the singlet state of two spin-1/2 particles.
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