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