Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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