The Kerr Metric from Foam Incompressibility: Rotating Black Holes, Frame Dragging, and Spin-1/2

The exact Kerr metric derived from three foam conditions: (1) covariant density with oblate correction gives g_tt; (2) incompressibility ν = 1/2 with centrifugal barrier gives g_rr, g_θθ; (3) torsion = angular momentum gives g_tφ; g_φφ from determinant condition. All five components, zero free parameters beyond M and J. Spin-1/2 from Wilson loop flux: fermion triangle Φ = 2θ_sh + θ_hh = π, spin = π/(2π) = 1/2. Complete spin-statistics from torsion flux. Part LVII of the Unified Foam Field Theory.