The Structural Tuple
Each of Papers 1–4 uses a strict subset of a single load-bearing tuple. Paper 5 names that tuple, writes it down once, and shows that it is the common architecture of the prior four foundation theorems.
Foundation Theorems — Where They Sit
The synthesis records, for each foundation theorem, which subset of ΣV600 it consumes. The factorisation is documented, not redone:
| Theorem | Imports from ΣV600 | Source |
|---|---|---|
| Bekenstein 4/16 incidence | V600, Dic5, σ-action | Paper 1 |
| Monochromatic Eq = 5/2 spectrum | V600, Dic5, σ-pair structure | Paper 2 |
| Canonical τσ involution | V600, Dic5, K-classes, icosian trace metric | Paper 3 |
| K-saturated rank-1 admissibility | Tτ-cycles, K-multiset, τσ-invariance | Paper 4 |
Bridge Results
Two small but load-bearing bridge results appear here that did not have a clean home in any single prior paper:
V24 ≠ Dic5
The order-24 binary tetrahedral subgroup V24 and the order-20 binary dihedral subgroup Dic5 are distinct subgroups of V600. Their intersection |V24 ∩ Dic5| = 4 is exactly the centre ⟨−1⟩-extension of the trivial intersection at the SO(3) level.
τσ phase-independence holds programme-wide
The Z25 = 32 canonical lifts of τσ from Paper 3 yield identical conclusions across all four foundation theorems. The phase-independence is not just a Paper-4 lemma but a programme-wide invariance.
What Is — And Is Not — Claimed
Future Builds — Named With Their Prerequisites
Two natural extensions are named explicitly so the boundary is clean:
- CMB-bulk projection. Would require: a derivation of Hypothesis H1 from Paper 4 (sign assignment promoted to theorem), perturbation theory inside ΣV600, and a projection rule from K-classes to acoustic-peak structure. None of these prerequisites are met by Papers 1–4 as written.
- Cosmic-dipole 1+k/2 ladder. Would require: a programme-level interpretation of the K-multiset as a dipole hierarchy and an empirical cross-check against published dipole measurements. Mentioned in Paper 4 only as related; reserved for this future build.
Strategic Positioning
A reader who arrives at Paper 4's cosmological observation without first absorbing the finite-group machinery underneath could understandably wonder how much of the result depends on architectural choices (the choice of cycle space, of the K-multiset, of τσ's lift). Paper 5 collects those choices into one documented place and shows they are shared across the programme — not invented per-paper.
The discipline recommendation in the paper is explicit: Papers 1–4 should receive visible citations before this synthesis is shipped, so that the reader can trace any structural claim back to its proving paper. This synthesis is not a self-contained result; it is the structural index for the four foundation theorems.
Four theorems. One structural tuple. Synthesis that re-proves nothing — and that names what remains open.