Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(¬¬(r ↔ (r ∨ r)) ∧ T ∧ r)

⇒ logic.propositional.idempor

¬(¬¬(r ↔ r) ∧ T ∧ r)