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