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