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