Registry · Theorem
V.T95
tau-effective
formalized
V.T95 — Shadow Shape Theorem (T^2 vs S^2)
The shadow of a T^2 coherent instance differs from a Schwarzschild (S^2) shadow in three measurable ways: inclination-dependent ellipticity, an inner shadow (visible when the torus hole is face-on), and modified photon-ring spacing from the toroidal Lyapunov exponent.
Book V
Part 5
Ch. 42