Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
((~q /\ F) || (~q /\ ~(p -> q))) -> p
⇒ logic.propositional.defimpl((~q /\ F) || (~q /\ ~(~p || q))) -> p
⇒ logic.propositional.demorganor((~q /\ F) || (~q /\ ~~p /\ ~q)) -> p
⇒ logic.propositional.falsezeroand(F || (~q /\ ~~p /\ ~q)) -> p
⇒ logic.propositional.falsezeroor(~q /\ ~~p /\ ~q) -> p
⇒ logic.propositional.notnot(~q /\ p /\ ~q) -> p