Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.idempor

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

⇒ logic.propositional.defimpl

q || ~(~q || r) || r