Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

~~(~q /\ (q || p)) /\ T /\ (~~q || ~r)

⇒ logic.propositional.truezeroand

~~(~q /\ (q || p)) /\ (~~q || ~r)

⇒ logic.propositional.notnot

~~(~q /\ (q || p)) /\ (q || ~r)