Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

((r ↔ (F ∨ r)) → ¬(T ∧ r)) ∨ ¬T

⇒ logic.propositional.truezeroand

((r ↔ (F ∨ r)) → ¬r) ∨ ¬T