Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.defequiv

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