Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(¬¬((T ∧ r) ↔ r) ∧ T ∧ r ∧ T)

⇒ logic.propositional.truezeroand

¬(¬¬(r ↔ r) ∧ T ∧ r ∧ T)