Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.idempor

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