Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬((r ∨ r) ↔ r) ∨ ¬(F ∨ T) ∨ ¬r

⇒ logic.propositional.falsezeroor

¬((r ∨ r) ↔ r) ∨ ¬T ∨ ¬r