Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
(T /\ r) || ~(~q || r) || q
⇒ logic.propositional.demorganor(T /\ r) || (~~q /\ ~r) || q
⇒ logic.propositional.notnot(T /\ r) || (q /\ ~r) || q
⇒ logic.propositional.absorpor(T /\ r) || q
⇒ logic.propositional.truezeroandr || q