Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(T ∧ ¬¬((r ∧ r) ↔ r) ∧ T ∧ r)

⇒ logic.propositional.idempand

¬(T ∧ ¬¬(r ↔ r) ∧ T ∧ r)