Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
r || q || ~(q -> r) || q || r
⇒ logic.propositional.defimplr || q || ~(~q || r) || q || r
⇒ logic.propositional.demorganorr || q || (~~q /\ ~r) || q || r
⇒ logic.propositional.notnotr || q || (q /\ ~r) || q || r
⇒ logic.propositional.absorporr || q || q || r
⇒ logic.propositional.idemporr || q || r