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