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