Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.falsezeroor

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.defimpl

~~q || ~p || q || p

⇒ logic.propositional.notnot

q || ~p || q || p