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.equality.equals_reversal
2	instantiation	3, 4, 5	⊢
	: , : , :
3	theorem		⊢
	proveit.core_expr_types.tuples.partition_front
4	instantiation	6, 7, 8	⊢
	:
5	instantiation	9, 10	⊢
	:
6	theorem		⊢
	proveit.numbers.number_sets.integers.nonneg_int_is_natural
7	instantiation	11, 12, 13	⊢
	: , :
8	instantiation	14, 15	⊢
	: , :
9	theorem		⊢
	proveit.numbers.addition.elim_zero_left
10	instantiation	31, 16, 17	⊢
	: , : , :
11	theorem		⊢
	proveit.numbers.addition.add_int_closure_bin
12	instantiation	31, 32, 22	⊢
	: , : , :
13	instantiation	18, 19, 20	⊢
	: , : , :
14	theorem		⊢
	proveit.numbers.addition.subtraction.nonneg_difference
15	instantiation	21, 22	⊢
	:
16	theorem		⊢
	proveit.numbers.number_sets.complex_numbers.real_within_complex
17	instantiation	31, 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	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
23	theorem		⊢
	proveit.numbers.number_sets.real_numbers.rational_within_real
24	instantiation	31, 29, 30	⊢
	: , : , :
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	theorem		⊢
	proveit.numbers.number_sets.rational_numbers.int_within_rational
30	instantiation	31, 32, 33	⊢
	: , : , :
31	theorem		⊢
	proveit.logic.sets.inclusion.superset_membership_from_proper_subset
32	theorem		⊢
	proveit.numbers.number_sets.integers.nat_within_int
33	theorem		⊢
	proveit.numbers.numerals.decimals.nat1