The Algebraic Landscape of Kochen-Specker Sets in Dimension Three
arXiv QuantumArchived Mar 19, 2026✓ Full text saved
arXiv:2603.16988v1 Announce Type: new Abstract: We present a computational survey of Kochen-Specker (KS) uncolorability in three-dimensional Hilbert space across two-symbol coordinate alphabets $\mathcal{A} = \{0, \pm 1, \pm x\}$ drawn from quadratic, cyclotomic, and golden-ratio number fields. In every tested alphabet, KS sets arise only when $x$ supports one of two cancellation mechanisms: modulus-2 cancellation (the generator satisfies $|x|^2 = 2$, as in $|\sqrt{2}|^2=2$, $|\sqrt{-2}|^2=2$, o
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Quantum Physics
[Submitted on 17 Mar 2026]
The Algebraic Landscape of Kochen-Specker Sets in Dimension Three
Michael Kernaghan
We present a computational survey of Kochen-Specker (KS) uncolorability in three-dimensional Hilbert space across two-symbol coordinate alphabets \mathcal{A} = \{0, \pm 1, \pm x\} drawn from quadratic, cyclotomic, and golden-ratio number fields. In every tested alphabet, KS sets arise only when x supports one of two cancellation mechanisms: modulus-2 cancellation (the generator satisfies |x|^2 = 2, as in |\sqrt{2}|^2=2, |\sqrt{-2}|^2=2, or |\alpha|^2=2; the integer case 1+1=2 is the degenerate additive instance) or phase cancellation (a vanishing sum of unit-modulus terms, as in 1+\omega+\omega^2=0). Alphabets whose generators have |x|^2 \geq 3 and are not roots of unity produce orthogonal triples but not KS-uncolorability in our survey. This empirical pattern explains why constructions cluster into six discrete algebraic islands among the tested fields. Two yield potentially new KS graph types: the Heegner-7 ring \mathbb{Z}[(1+\sqrt{-7})/2] (43 vectors) and the golden ratio field \mathbb{Q}(\varphi) (52 vectors, revealed only by cross-product completion); \mathbb{Z}[\sqrt{-2}] provides a new algebraic realization of a known Peres-type graph. Using SAT-based bipartite KS-uncolorability, we verify and extend the input counts of Trandafir and Cabello for bipartite perfect quantum strategies across all six islands. Whether the two-mechanism pattern extends to all number fields remains an open question.
Comments: 36 pages, 15 tables, no figures
Subjects: Quantum Physics (quant-ph)
MSC classes: 81P13, 05C65, 11R04
Cite as: arXiv:2603.16988 [quant-ph]
(or arXiv:2603.16988v1 [quant-ph] for this version)
https://doi.org/10.48550/arXiv.2603.16988
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From: Michael Kernaghan Ph.D. [view email]
[v1] Tue, 17 Mar 2026 17:31:59 UTC (40 KB)
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