Proof of proveit.logic.booleans.conjunction.demorgans_law_or_to_and theorem

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

%proving demorgans_law_or_to_and

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