Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

r || q || ~(~q || r)

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.absorpor

r || q