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