importproveittheory=proveit.Theory()# the theorem's theory
In [2]:
%proving neg_rational_is_rational_neg
With these allowed/disallowed theorem/theory presumptions (e.g., to avoid circular dependencies), we begin our proof of neg_rational_is_rational_neg: (see dependencies)
neg_rational_is_rational_neg may now be readily provable (assuming required theorems are usable). Simply execute "%qed".