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))