theorem
proved
wrapper
phi_cost_pos
show as:
view Lean formalization →
formal statement (Lean)
69theorem phi_cost_pos : 0 < LawOfExistence.J PhiForcing.φ := by
proof body
One-line wrapper that applies rw.
70 rw [phi_cost_eq]; linarith [PhiForcing.phi_gt_onePointSix]
71