Measures of contextuality in cyclic systems and the negative probabilities measure CNT3

• URL: http://arxiv.org/abs/2305.16574v1
• Date: Fri, 26 May 2023 01:49:35 GMT
• Title: Measures of contextuality in cyclic systems and the negative probabilities measure CNT3
• Authors: Giulio Camillo and V\'ictor H. Cervantes
• Abstract summary: Several principled measures of contextuality have been proposed for general systems of random variables. We prove that in the class of cyclic systems these measures are proportionality proportional. The present proof completes the description of all contextuality measures as they pertain to the interrelations of cyclic systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Several principled measures of contextuality have been proposed for general systems of random variables (i.e. inconsistentlly connected systems). The first of such measures was based on quasi-couplings using negative probabilities (here denoted by CNT3, Dzhafarov & Kujala, 2016). Dzhafarov and Kujala (2019) introduced a measure of contextuality, CNT2, that naturally generalizes to a measure of non-contextuality. Dzhafarov and Kujala (2019) additionally conjectured that in the class of cyclic systems these two measures are proportional. Here we prove that that conjecture is correct. Recently, Cervantes (2023) showed the proportionality of CNT2 and the Contextual Fraction measure (CNTF) introduced by Abramsky, Barbosa, and Mansfeld (2017). The present proof completes the description of the interrelations of all contextuality measures as they pertain to cyclic systems.

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