Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(T ∧ ¬¬(r ∧ r) ∧ (r ↔ r))

⇒ logic.propositional.idempand

¬(T ∧ ¬¬r ∧ (r ↔ r))