Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(((¬¬r ↔ r) ∨ (¬¬r ↔ ¬¬r)) ∧ T ∧ r)

⇒ logic.propositional.notnot

¬(((¬¬r ↔ r) ∨ (¬¬r ↔ r)) ∧ T ∧ r)