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, 4, 5, 6, 7, 8	⊢
	: , : , : , : , : , :
1	theorem		⊢
	proveit.numbers.addition.disassociation
2	axiom		⊢
	proveit.numbers.number_sets.natural_numbers.zero_in_nats
3	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
4	reference	22	⊢
5	theorem		⊢
	proveit.core_expr_types.tuples.tuple_len_0_typical_eq
6	instantiation	9	⊢
	: , :
7	instantiation	23, 11, 10	⊢
	: , : , :
8	instantiation	23, 11, 12	⊢
	: , : , :
9	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq
10	instantiation	23, 14, 13	⊢
	: , : , :
11	theorem		⊢
	proveit.numbers.number_sets.complex_numbers.real_within_complex
12	instantiation	23, 14, 15	⊢
	: , : , :
13	instantiation	23, 17, 16	⊢
	: , : , :
14	theorem		⊢
	proveit.numbers.number_sets.real_numbers.rational_within_real
15	instantiation	23, 17, 18	⊢
	: , : , :
16	instantiation	19, 20	⊢
	:
17	theorem		⊢
	proveit.numbers.number_sets.rational_numbers.int_within_rational
18	instantiation	23, 21, 22	⊢
	: , : , :
19	theorem		⊢
	proveit.numbers.negation.int_closure
20	instantiation	23, 24, 25	⊢
	: , : , :
21	theorem		⊢
	proveit.numbers.number_sets.integers.nat_within_int
22	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
23	theorem		⊢
	proveit.logic.sets.inclusion.superset_membership_from_proper_subset
24	theorem		⊢
	proveit.numbers.number_sets.integers.nat_pos_within_int
25	assumption		⊢