Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬¬¬((r ↔ ¬¬r) ∧ T ∧ r) ∧ T

⇒ logic.propositional.notnot

¬¬¬((r ↔ r) ∧ T ∧ r) ∧ T