Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(r ∧ ((r ∧ r) ∨ ¬(r ∨ r)))

⇒ logic.propositional.idempor

¬(r ∧ ((r ∧ r) ∨ ¬r))