Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

q || (T /\ (~~(p -> q) || p))

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

q || ~p || q || p