Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

~~(~(F || (q -> r)) || q || r)

⇒ logic.propositional.defimpl

~~(~(F || ~q || r) || q || r)

⇒ logic.propositional.falsezeroor

~~(~(~q || r) || q || r)