Proof of proveit.numbers.number_sets.integers.nat_pos_within_int theorem

import proveit
theory = proveit.Theory() # the theorem's theory

%proving nat_pos_within_int

With these allowed/disallowed theorem/theory presumptions (e.g., to avoid circular dependencies), we begin our proof of
nat_pos_within_int:
(see dependencies)

nat_pos_within_int may now be readily provable (assuming required theorems are usable).  Simply execute "%qed".