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

import proveit
from proveit.logic.booleans.conjunction  import and_t_t
theory = proveit.Theory() # the theorem's theory

%proving true_and_true

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

true_and_true has been proven.  Now simply execute "%qed".

%qed

proveit.logic.booleans.conjunction.true_and_true has been proven.

	step type	requirements	statement
0	instantiation	1, 2	⊢
	:
1	axiom		⊢
	proveit.logic.booleans.eq_true_elim
2	axiom		⊢
	proveit.logic.booleans.conjunction.and_t_t