Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.nottrue

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