Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(r ↔ (r ∨ r)) ∨ ¬r ∨ ¬T

⇒ logic.propositional.nottrue

¬(r ↔ (r ∨ r)) ∨ ¬r ∨ F

⇒ logic.propositional.falsezeroor

¬(r ↔ (r ∨ r)) ∨ ¬r