Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(¬¬r ∧ (¬¬r ↔ r) ∧ T)

⇒ logic.propositional.notnot

¬(r ∧ (¬¬r ↔ r) ∧ T)