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