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