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	instantiation	1, 2, 3	⊢
	: , : , :
1	theorem		⊢
	proveit.logic.equality.sub_left_side_into
2	instantiation	4, 16, 5, 19	⊢
	: , : , : , :
3	instantiation	6, 7, 8, 9	⊢
	: , : , : , :
4	theorem		⊢
	proveit.logic.sets.enumeration.subset_eq_of_superset
5	instantiation	23	⊢
	: , : , :
6	theorem		⊢
	proveit.logic.equality.four_chain_transitivity
7	instantiation	14, 17, 12, 10, 20, 11	⊢
	: , : , : , : , : , : , :
8	instantiation	14, 12, 16, 13	⊢
	: , : , : , : , : , : , :
9	instantiation	14, 15, 16, 17, 18, 19, 20	⊢
	: , : , : , : , : , : , :
10	theorem		⊢
	proveit.numbers.numerals.decimals.nat4
11	instantiation	21	⊢
	: , : , : , :
12	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
13	instantiation	23	⊢
	: , : , :
14	theorem		⊢
	proveit.logic.sets.enumeration.leftward_permutation
15	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
16	theorem		⊢
	proveit.numbers.numerals.decimals.nat3
17	axiom		⊢
	proveit.numbers.number_sets.natural_numbers.zero_in_nats
18	instantiation	22	⊢
	: , :
19	instantiation	23	⊢
	: , : , :
20	theorem		⊢
	proveit.core_expr_types.tuples.tuple_len_0_typical_eq
21	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_4_typical_eq
22	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq
23	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_3_typical_eq