Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempor

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

⇒ logic.propositional.truezeroand

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