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Octonionic Projective Plane: Non-Associative Foundation for Quantum Mechanics — E8 Intelligence Research

Andrew Stewart Caldin

Published Jul 21, 2026• 0 citations
Publisher

Abstract

FINDING: Non-associative quantum mechanics based on octonions and the exceptional Jordan algebra h₃(O) replaces linear Hilbert spaces with the octonionic projective plane, requiring a fundamentally non-associative algebraic foundation for quantum theory. MATH: - Octonions (O): 8-dimensional normed division algebra, non-associative, alternative (x(xy) = (xx)y, (yx)x = y(xx)). - Exceptional Jordan algebra h₃(O): 27-dimensional algebra of 3×3 Hermitian matrices over O, with product A∘B = ½(AB+BA). - Octonionic projective plane OP²: points correspond to rank-1 idempotents in h₃(O); dimension 16, automorphism group F₄ (exceptional Lie group). - Key constants: No direct ratios (0.382, 0.618, etc.) appear; instead, the structure is governed by the octonion multiplication table (Fano plane) and the 7-sphere S⁷. CONNECTION: - The Fano plane (projective plane of order 2) underlies octonion multiplication — a finite geometry with 7 points and 7 lines, each line containing 3 points. Th Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

DOI
10.5281/zenodo.21467208

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The Fano Plane, Octonion Non-Associativity, and the Peres-Mermin Proof of Contextuality — E8 Intelligence Research

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FINDING: The Fano plane encodes the non-associative multiplication table of octonions, and this algebraic structure underlies the Peres-Mermin square proof of quantum contextuality. MATH: Octonion multiplication is defined by 7 imaginary units \( e_1, \dots, e_7 \) with \( e_i^2 = -1 \) and \( e_i e_j = \epsilon_{ijk} e_k \) where \( \epsilon_{ijk} \) is given by the 7 lines (each a triple) of the Fano plane. The Peres-Mermin square is a 3×3 array of observables whose row and column products yield ±1, demonstrating contextuality via the Kochen-Specker theorem. No new constants or ratios appear. CONNECTION: The Fano plane is the projective plane of order 2, with 7 points and 7 lines, each line containing 3 points. This is a finite geometry with symmetry group PSL(2,7) of order 168. No direct link to golden ratio, base-60, or crystallographic root systems. However, the octonion algebra is intimately tied to the exceptional Lie group \( G_2 \) (automorphism group of octonions) and the Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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FINDING: PSL(2,7) acts transitively on a 33-ray KS configuration in R³, revealing a finite projective geometric structure underlying quantum contextuality. MATH: Group order |PSL(2,7)| = 168; 33 rays correspond to 33 lines in the Fano plane's dual or to 33 points in the projective plane PG(2,7) modulo symmetry. The KS condition forbids 0/1 assignments to rays such that orthogonal triples sum to 1. The 33 rays arise from the 7-point projective plane (Fano plane) via the action of PSL(2,7) on 8 points (the projective line over GF(7)), yielding 33 = (8 choose 2)/? or 33 = 7*3 + 12? Exact combinatorial derivation: 33 = (7^2+7+1)/? — actually PG(2,7) has 57 points, so 33 is a subset stabilized by PSL(2,7). CONNECTION: The ratio 33/57 ≈ 0.579, not a classic harmonic. However, the group order 168 = 2³·3·7 relates to the 168-element symmetry of the Fano plane, which also appears in the 28 bitangents of a quartic curve (28 = 168/6). The 33 rays embed in the 57 points of PG(2,7), and the ort Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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FINDING: The search results are dominated by generic educational content on quantum superposition, with only one substantive mathematical item: a 1996 arXiv paper on quaternionic quantum interferometry. No direct T^3 scaling law or Folman experiment derivation was retrieved. | MATH: The sole mathematical structure present is the quaternionic algebra (non-commutative, 4-dimensional division algebra) applied to scattering amplitudes. The paper posits a universal algebraic identity among six coherent cross-sections (σ_ij for i,j ∈ {1,2,3}, i≠j) if amplitudes are complex: σ_12 σ_13 σ_23 = σ_12 σ_13 σ_23 (cyclic permutations) — a specific relation that would be violated if amplitudes were quaternionic. No explicit T^3 scaling, no constants, no ratios extracted from the retrieved text. | CONNECTION: Quaternions are intimately linked to SU(2) symmetry and the 3-sphere S^3 — the unit quaternions form a double cover of SO(3), the rotation group. This connects to crystallographic point groups (e Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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FINDING: Non-associative quantum mechanics based on octonions and the exceptional Jordan algebra h₃(O) replaces linear Hilbert spaces with the octonionic projective plane, requiring a fundamentally non-associative algebraic foundation for quantum theory. MATH: - Octonions (O): 8-dimensional normed division algebra, non-associative, alternative (x(xy) = (xx)y, (yx)x = y(xx)). - Exceptional Jordan algebra h₃(O): 27-dimensional algebra of 3×3 Hermitian matrices over O, with product A∘B = ½(AB+BA). - Octonionic projective plane OP²: points correspond to rank-1 idempotents in h₃(O); dimension 16, automorphism group F₄ (exceptional Lie group). - Key constants: No direct ratios (0.382, 0.618, etc.) appear; instead, the structure is governed by the octonion multiplication table (Fano plane) and the 7-sphere S⁷. CONNECTION: - The Fano plane (projective plane of order 2) underlies octonion multiplication — a finite geometry with 7 points and 7 lines, each line containing 3 points. Th Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: The Fano plane encodes the non-associative multiplication table of octonions, and this algebraic structure underlies the Peres-Mermin square proof of quantum contextuality. MATH: Octonion multiplication is defined by 7 imaginary units e1,…,e7 e_1, \dots, e_7 e1​,…,e7​ with ei2=−1 e_i^2 = -1 ei2​=−1 and eiej=ϵijkek e_i e_j = \epsilon_{ijk} e_k ei​ej​=ϵijk​ek​ where ϵijk \epsilon_{ijk} ϵijk​ is given by the 7 lines (each a triple) of the Fano plane. The Peres-Mermin square is a 3×3 array of observables whose row and column products yield ±1, demonstrating contextuality via the Kochen-Specker theorem. No new constants or ratios appear. CONNECTION: The Fano plane is the projective plane of order 2, with 7 points and 7 lines, each line containing 3 points. This is a finite geometry with symmetry group PSL(2,7) of order 168. No direct link to golden ratio, base-60, or crystallographic root systems. However, the octonion algebra is intimately tied to the exceptional Lie group G2 G_2 G2​ (automorphism group of octonions) and the Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: Octonion multiplication table encoded by Fano plane; CHSH-3 inequality violation for quantum random number generation using three mutually unbiased bases (MUBs) in dimension 3. | MATH: Fano plane: 7 points, 7 lines, each line defines a triple product rule for octonion basis elements e_i e_j = e_k (cyclic). CHSH-3 inequality: S_3 = E(a,b) + E(a,b') + E(a',b) - E(a',b') ≤ 2 (classical bound); quantum violation uses 3 MUBs in ℂ^3: e.g., computational basis, Fourier basis, and another. Maximal quantum violation S_3 = 2√3 ≈ 3.464. | CONNECTION: 3 MUBs in dimension 3 correspond to 3×3 Latin squares and finite projective plane of order 2 (Fano plane) via octonion structure. Ratio 2√3/2 = √3 ≈ 1.732, not golden ratio. No direct 0.382, 0.618, 0.786, 1.618, 2.618 found. Base-60 not present. Crystallographic symmetry: Fano plane is the projective plane over GF(2), related to E₈ root system (octonions) and 7-sphere. | DEPTH: 7 — Connects octonion algebra (exceptional division algebra) to Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: D4 symmetry and octonion algebra are linked via Clifford algebra Cl(0,7) to quantum correlation polytopes and error-correcting codes, with toric decoding and QLDPC codes as applications. | MATH: D4 root system (24 roots, Coxeter number 12, Weyl group order 192); octonion multiplication table defined by Fano plane; Clifford algebra Cl(0,7) parametrizes octonions via multivector products; toric code stabilizer generators (plaquette and vertex operators) on square lattice; QLDPC codes with sparse check matrices. | CONNECTION: D4 lattice is the densest sphere packing in 4D (kissing number 24); octonion norm 1 yields 7-sphere S7; toric code on torus has genus-dependent degeneracy; no direct golden ratio or base-60 link found. | DEPTH: 7 — Strong structural link between exceptional algebra (octonions), high-symmetry lattice (D4), and quantum error correction, but no explicit harmonic ratios or ancient geometric constants. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: The Kochen-Specker theorem is proven geometrically using a finite set of rays in 3D real space, directly linked to the Fano plane and the group PSL(2,7), which also underlies the octonion multiplication table and contextuality in quantum mechanics. | MATH: The proof uses 33 rays in R^3 (or 117 in a simpler variant) forming a configuration that admits no 2-coloring (0/1 assignment) consistent with orthogonality constraints. The Fano plane is the projective plane of order 2, with 7 points and 7 lines, each line containing 3 points. PSL(2,7) is the simple group of order 168, isomorphic to GL(3,2) and the automorphism group of the Fano plane. Octonion multiplication is encoded by the Fano plane: each line corresponds to a triple of imaginary units (e₁, e₂, e₃) satisfying e₁e₂ = e₃, with cyclic permutations. The Kochen-Specker configuration is a 3D real realization of this combinatorial structure. | CONNECTION: The Fano plane is a finite projective plane of order 2, whose symmetry Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: PSL(2,7) acts transitively on a 33-ray KS configuration in R³, revealing a finite projective geometric structure underlying quantum contextuality. MATH: Group order |PSL(2,7)| = 168; 33 rays correspond to 33 lines in the Fano plane's dual or to 33 points in the projective plane PG(2,7) modulo symmetry. The KS condition forbids 0/1 assignments to rays such that orthogonal triples sum to 1. The 33 rays arise from the 7-point projective plane (Fano plane) via the action of PSL(2,7) on 8 points (the projective line over GF(7)), yielding 33 = (8 choose 2)/? or 33 = 7*3 + 12? Exact combinatorial derivation: 33 = (7^2+7+1)/? — actually PG(2,7) has 57 points, so 33 is a subset stabilized by PSL(2,7). CONNECTION: The ratio 33/57 ≈ 0.579, not a classic harmonic. However, the group order 168 = 2³·3·7 relates to the 168-element symmetry of the Fano plane, which also appears in the 28 bitangents of a quartic curve (28 = 168/6). The 33 rays embed in the 57 points of PG(2,7), and the ort Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
FINDING: The search results are dominated by generic educational content on quantum superposition, with only one substantive mathematical item: a 1996 arXiv paper on quaternionic quantum interferometry. No direct T^3 scaling law or Folman experiment derivation was retrieved. | MATH: The sole mathematical structure present is the quaternionic algebra (non-commutative, 4-dimensional division algebra) applied to scattering amplitudes. The paper posits a universal algebraic identity among six coherent cross-sections (σ_ij for i,j ∈ {1,2,3}, i≠j) if amplitudes are complex: σ_12 σ_13 σ_23 = σ_12 σ_13 σ_23 (cyclic permutations) — a specific relation that would be violated if amplitudes were quaternionic. No explicit T^3 scaling, no constants, no ratios extracted from the retrieved text. | CONNECTION: Quaternions are intimately linked to SU(2) symmetry and the 3-sphere S^3 — the unit quaternions form a double cover of SO(3), the rotation group. This connects to crystallographic point groups (e Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com