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	⊢
	: , : , :
1	theorem		⊢
	proveit.logic.sets.subtraction.membership_unfolding
2	instantiation	3, 4, 5	⊢
	: , : , :
3	theorem		⊢
	proveit.logic.sets.subtraction.membership_folding
4	instantiation	6, 19, 16, 7	⊢
	: , : , : , : , :
5	instantiation	8, 20, 9, 10, 11	⊢
	: , : , :
6	theorem		⊢
	proveit.logic.sets.enumeration.in_enumerated_set
7	instantiation	12	⊢
	: , : , :
8	theorem		⊢
	proveit.logic.sets.enumeration.nonmembership_fold
9	instantiation	13	⊢
	: , :
10	instantiation	14, 15	⊢
	: , :
11	instantiation	18, 20, 16, 17	⊢
	: , :
12	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_3_typical_eq
13	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq
14	theorem		⊢
	proveit.logic.equality.not_equals_symmetry
15	instantiation	18, 19, 20, 21	⊢
	: , :
16	theorem		⊢
	proveit.numbers.numerals.decimals.nat3
17	theorem		⊢
	proveit.numbers.numerals.decimals.less_2_3
18	theorem		⊢
	proveit.numbers.ordering.less_is_not_eq_nat
19	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
20	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
21	theorem		⊢
	proveit.numbers.numerals.decimals.less_1_2