Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(r ↔ (r ∨ r)) ∨ ¬(T ∨ T) ∨ ¬r

⇒ logic.propositional.idempor

¬(r ↔ (r ∨ r)) ∨ ¬T ∨ ¬r