Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.notnot

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