Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬((¬(¬r ∨ ¬r) ↔ r) ∧ T ∧ (r ∨ r))

⇒ logic.propositional.idempor

¬((¬¬r ↔ r) ∧ T ∧ (r ∨ r))