Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.defequiv

~~((p || q) /\ ((r /\ p) || (~r /\ ~p)))