Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.falsezeroor

~(q || ~p || q) -> (p || p)