Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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