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The contextual fraction as a measure of contextuality

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arxiv 1705.07918 v1 pith:NS3PCNW3 submitted 2017-05-22 quant-ph

The contextual fraction as a measure of contextuality

classification quant-ph
keywords contextualitymeasurementcontextualfractionmeasureacrossadvantagesbears
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider the contextual fraction as a quantitative measure of contextuality of empirical models, i.e. tables of probabilities of measurement outcomes in an experimental scenario. It provides a general way to compare the degree of contextuality across measurement scenarios; it bears a precise relationship to violations of Bell inequalities; its value, and a witnessing inequality, can be computed using linear programming; it is monotone with respect to the "free" operations of a resource theory for contextuality; and it measures quantifiable advantages in informatic tasks, such as games and a form of measurement based quantum computing.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Genuine Global Kochen-Specker Contextuality as Classical Coordination Cost

    quant-ph 2026-06 unverdicted novelty 7.0

    Genuine global KS contextuality is framed as the classical coordination cost needed to maintain a global noncontextual explanation from locally available information in multipartite systems.

  2. The Algebraic Landscape of Kochen-Specker Sets in Dimension Three

    quant-ph 2026-03 unverdicted novelty 7.0

    KS uncolorability in 3D occurs only with modulus-2 or phase cancellation in the coordinate generators, producing new graph types in the Heegner-7 ring and golden ratio field.