Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.andoveror

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

⇒ logic.propositional.absorpand

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

⇒ logic.propositional.absorpand

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