Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
~(F || p) -> ((F /\ r) || q)
⇒ logic.propositional.falsezeroand~(F || p) -> (F || q)
⇒ logic.propositional.falsezeroor~p -> (F || q)
⇒ logic.propositional.falsezeroor~p -> q
⇒ logic.propositional.defimpl~~p || q
⇒ logic.propositional.notnotp || q