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