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theorem proved term proof

V_cb_from_cube_edges

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formal statement (Lean)

  74theorem V_cb_from_cube_edges :
  75    V_cb_geom = 1 / (2 * cube_edges 3) := by

proof body

Term-mode proof.

  76  simp only [V_cb_geom, edge_dual_ratio, cube_edges]
  77  norm_num
  78
  79/-! ## Verification Theorems -/
  80
  81/-- V_cb matches within 1 sigma.
  82
  83    pred = 1/24 ≈ 0.04166666...
  84    obs  = 0.04182
  85    err  = 0.00085
  86    |pred - obs| = |0.04166 - 0.04182| = 0.00016 < 0.00085 ✓
  87
  88    This is now PROVEN, not axiomatized. -/

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