Proof of proveit.numbers.exponentiation.diff_square_comm theorem

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

%proving diff_square_comm

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

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