Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.falsezeroor

~((q -> r) /\ (q -> r)) || q || r

⇒ logic.propositional.idempand

~(q -> r) || q || r

⇒ logic.propositional.defimpl

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