Show the Proof

import proveit
# Automation is not needed when only showing a stored proof:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%show_proof

	step type	requirements	statement
0	generalization	1	⊢
1	instantiation	2, 3, 4	,  ⊢
	: , :
2	theorem		⊢
	proveit.logic.equality.lhs_via_equality
3	generalization	5	,  ⊢
4	instantiation	15	⊢
	: , :
5	instantiation	6, 7	, ,  ⊢
	:
6	instantiation	12, 8, 9	⊢
	: , :
7	instantiation	10, 11	,  ⊢
	:
8	assumption		⊢
9	instantiation	15	⊢
	: , :
10	instantiation	12, 13, 14	⊢
	: , :
11	assumption		⊢
12	theorem		⊢
	proveit.logic.equality.rhs_via_equality
13	assumption		⊢
14	instantiation	15	⊢
	: , :
15	axiom		⊢
	proveit.logic.sets.inclusion.subset_eq_def