Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

~((F || ~q || r) /\ (F || ~q || r)) || q || r

⇒ logic.propositional.idempand

~(F || ~q || r) || q || r

⇒ logic.propositional.falsezeroor

~(~q || r) || q || r