Registry · Proposition
IV.P202
tau-effective
formalized
IV.P202 — 15 = 3 × 5 Boundary Mode Decomposition
15 boundary modes on ∂(τ³) = 3 generations × 5 modes/generation = 3 × N_generators. Per generation: 1 charged lepton + 1 neutrino + 3 color-quarks = 5. The 11/4 split (11 EM-active, 4 EM-silent) gives α = (11/15)²·ι_τ⁴ at 9.8 ppm.