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