exact absurd two not_two
ℕ : Type
inst✝⁵ : Natural ℕ
ℤ : Type
inst✝⁴ : Core ℤ
inst✝³ : Addition ℤ
inst✝² : Multiplication ℤ
inst✝¹ : Negation ℤ
inst✝ : Sign ℤ
a : ℤ
left✝ : Positive a
right✝ : Negative a
two : AA.TwoOfThree (a ≃ 0) (Positive a) (Negative a)
not_two : ¬AA.TwoOfThree (a ≃ 0) (Positive a) (Negative a)
⊢ False
no goals