Bardeen-Petterson & The Wedding — 90° as a Universal Attractor

Deriving the Bardeen-Petterson warp radius from Wedding algebra (d·u² = Ψ). Step 1: Kerr black hole gives B_h = 1/(d·u²) with preferred spin axis d_z. Step 2: Misaligned accretion disk at angle β creates two competing Ψ-throat directions. Step 3: Foam Field Equation Λ_θφ = ∂_θ ∂_φ ln|F| ∝ sin β / r⁴ — the gravitomagnetic torque. Step 4: Set Ω_LT · t_visc = 1 → r_BP ∝ (|d| sin β)^(1/3). Step 5: Stability condition L_disk × d_z = 0 forces β → 90° inside r_BP — a global fixed-point attractor. The disk lies perpendicular to the spin axis. The jets eject along d_z. The 90° is the same angle as the Pythagorean right angle, the hexagonal gate sin(πs/2) at Re(s)=1/2, and the magic square d-row phase rotation. Jet luminosity = incomplete Ψ-throats escaping along d_z (Blandford-Znajek mechanism). Dark energy = cosmological Bekenstein overflow from incompletely-closed Ψ-throats accumulated over 13.8 Gyr. Includes interactive 3D visualization of the disk/horizon/jet geometry. VLBI (EHT images of M87* and Sgr A*) confirms the 90° alignment observationally.

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