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