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