Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

~~((~~q /\ ~r) || F) || q || r

⇒ logic.propositional.falsezeroor

~~(~~q /\ ~r) || q || r

⇒ logic.propositional.notnot

~~(q /\ ~r) || q || r