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