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