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