Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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