Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(¬¬(r ∧ T) ↔ r) ∨ ¬T ∨ ¬r

⇒ logic.propositional.notnot

¬((r ∧ T) ↔ r) ∨ ¬T ∨ ¬r

⇒ logic.propositional.truezeroand

¬(r ↔ r) ∨ ¬T ∨ ¬r