Proof of proveit.logic.booleans.implication.iff_via_both_true theorem

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

%proving iff_via_both_true

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

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

%qed

proveit.logic.booleans.implication.iff_via_both_true has been proven.

	step type	requirements	statement
0	generalization	1	⊢
1	instantiation	2, 3, 4	,  ⊢
	: , :
2	conjecture		⊢
	proveit.logic.booleans.implication.iff_intro
3	deduction	5	⊢
4	deduction	6	⊢
5	assumption		⊢
6	assumption		⊢