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