File size: 326 Bytes
b324fea | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | new D → (F ∧ C → ((D ∨ B → A) → ((F → B) → (E ∨ D → ((A → E) → (((B ∨ D) ∧ A) ∧ B) ∧ (A ∨ (C ∨ (D → F ∨ A)))))))) intro intro cases 1 intro intro intro intro cases 1 constructor constructor constructor left apply 5 exact 2 apply 4 left exact 0 apply 5 exact 2 left apply 4 left exact 0 |