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.core_expr_types.tuples.partition_back
2	instantiation	4, 5, 6	⊢
	:
3	instantiation	7, 8, 9, 10	⊢
	: , : , :
4	theorem		⊢
	proveit.numbers.number_sets.integers.nonneg_int_is_natural
5	instantiation	11, 31, 12	⊢
	: , :
6	instantiation	13, 14	⊢
	: , :
7	theorem		⊢
	proveit.numbers.addition.subtraction.subtract_from_add
8	instantiation	33, 16, 15	⊢
	: , : , :
9	instantiation	33, 16, 17	⊢
	: , : , :
10	theorem		⊢
	proveit.numbers.numerals.decimals.add_1_1
11	theorem		⊢
	proveit.numbers.addition.add_int_closure_bin
12	instantiation	18, 19, 20	⊢
	: , : , :
13	theorem		⊢
	proveit.numbers.addition.subtraction.nonneg_difference
14	instantiation	21, 35	⊢
	:
15	instantiation	33, 23, 22	⊢
	: , : , :
16	theorem		⊢
	proveit.numbers.number_sets.complex_numbers.real_within_complex
17	instantiation	33, 23, 24	⊢
	: , : , :
18	theorem		⊢
	proveit.logic.sets.inclusion.unfold_subset_eq
19	instantiation	25, 26	⊢
	: , :
20	instantiation	27, 28	⊢
	: , :
21	theorem		⊢
	proveit.numbers.number_sets.natural_numbers.natural_lower_bound
22	instantiation	33, 30, 29	⊢
	: , : , :
23	theorem		⊢
	proveit.numbers.number_sets.real_numbers.rational_within_real
24	instantiation	33, 30, 31	⊢
	: , : , :
25	theorem		⊢
	proveit.logic.sets.inclusion.relax_proper_subset
26	theorem		⊢
	proveit.numbers.number_sets.integers.zero_set_within_int
27	theorem		⊢
	proveit.logic.sets.enumeration.fold_singleton
28	theorem		⊢
	proveit.numbers.negation.negated_zero
29	instantiation	33, 34, 32	⊢
	: , : , :
30	theorem		⊢
	proveit.numbers.number_sets.rational_numbers.int_within_rational
31	instantiation	33, 34, 35	⊢
	: , : , :
32	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
33	theorem		⊢
	proveit.logic.sets.inclusion.superset_membership_from_proper_subset
34	theorem		⊢
	proveit.numbers.number_sets.integers.nat_within_int
35	theorem		⊢
	proveit.numbers.numerals.decimals.nat2