Set: pp::colors
  Set: pp::unicode
  Assumed: a
  Assumed: b
  Assumed: c
a = 1 ∧ (¬ b = 0 ∨ c ≠ 0 ∨ b + c > a)
refl (a = 1 ∧ (¬ b = 0 ∨ c ≠ 0 ∨ b + c > a))
(a = 1 ∧ (¬ b = 0 ∨ c ≠ 0 ∨ b + c > a)) = (a = 1 ∧ (¬ b = 0 ∨ c ≠ 0 ∨ b + c > a))