Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
q || ~(~~~q || r) || r
⇒ logic.propositional.notnotq || ~(~q || r) || r
⇒ logic.propositional.demorganorq || (~~q /\ ~r) || r
⇒ logic.propositional.notnotq || (q /\ ~r) || r
⇒ logic.propositional.absorporq || r