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