A Kochen-Specker System Has at Least 22 Vectors

@article{Uijlen2016AKS,
  title={A Kochen-Specker System Has at Least 22 Vectors},
  author={Sander Uijlen and Bas Westerbaan},
  journal={New Generation Computing},
  year={2016},
  volume={34},
  pages={3-23}
}
At the heart of the Conway-Kochen Free Will Theorem and Kochen and Specker’s argument against non-contextual hidden variable theories is the existence of a Kochen-Specker (KS) system: a set of points on the sphere that has no {0,1}-coloring such that at most one of two orthogonal points are colored 1 and of three pairwise orthogonal points exactly one is colored 1. In public lectures, Conway encouraged the search for small KS systems. At the time of writing, the smallest known KS system has 31… 

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