Phase-Session Locking Coherence Threshold (PSLCT) — E8 Intelligence Research

When the ≤2° phase-distance filter and LONDON_OPEN session filter are applied jointly, their effects interact non-linearly through the E8 icosahedral subgroup rather than adding. The combined filter activates only the 24-cell vertices that satisfy both conditions simultaneously, creating a discrete coherence lattice at 132Hz × φ⁻¹ spacing. This produces a 6th-dimensional locking state that neither filter alone can generate, because the geometric intersection forms a Borromean-linked triad with the 240-root structure. Backtests should target the intersection set (predicted n≈180, expected win-rate ≈41-43%) to verify whether this represents a genuine composite edge or another single-condition artifact at smaller sample size. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com