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