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