Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.falsezeroor

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

⇒ logic.propositional.defimpl

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