Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.falsezeroor

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