Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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