Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notfalse

~(q -> r) || q || (T /\ ~~r)

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.notnot

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