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quant-ph2026
Sheaf-Theoretic Preparation Contextuality
Tom Williams, Mina Doosti, Farid Shahandeh
We introduce a preparation-dual notion of contextuality, formulated as an obstruction to stochastic extension. In parallel with the sheaf-theoretic formulation of measurement conte…
quant-ph2024
Maximal Non-Kochen-Specker Sets and a Lower Bound on the Size of Kochen-Specker Sets
Tom Williams, Andrei Constantin
The challenge of determining bounds for the minimal number of vectors in a three-dimensional Kochen-Specker (KS) set has captivated the quantum foundations community for decades. T…