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