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