Proof of proveit.numbers.numerals.decimals.posnat7 theorem

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

%proving posnat7

With these allowed/disallowed theorem/theory presumptions (e.g., to avoid circular dependencies), we begin our proof of
posnat7:
(see dependencies)

posnat7 may now be readily provable (assuming required theorems are usable).  Simply execute "%qed".