Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
F || r || ~(q -> r) || q
⇒ logic.propositional.defimplF || r || ~(~q || r) || q
⇒ logic.propositional.demorganorF || r || (~~q /\ ~r) || q
⇒ logic.propositional.notnotF || r || (q /\ ~r) || q
⇒ logic.propositional.absorporF || r || q