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