Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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