Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬((T ∧ r) ↔ (r ∨ r)) ∨ F ∨ ¬r

⇒ logic.propositional.truezeroand

¬(r ↔ (r ∨ r)) ∨ F ∨ ¬r