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