Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.absorpand

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

⇒ logic.propositional.absorpand

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