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.falsezeroor~p -> q
⇒ logic.propositional.defimpl~~p || q
⇒ logic.propositional.notnotp || q