Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
Final term is not finished
(p || q) /\ (r <-> (p || p))
⇒ logic.propositional.idempor(p || q) /\ (r <-> p)
⇒ logic.propositional.defequiv(p || q) /\ ((r /\ p) || (~r /\ ~p))