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, 9*	,  ⊢
	: , : , : , : , : , :
1	theorem		⊢
	proveit.numbers.addition.association
2	reference	22	⊢
3	reference	25	⊢
4	instantiation	10	⊢
	: , :
5	instantiation	23, 14, 11	⊢
	: , : , :
6	instantiation	23, 14, 12	⊢
	: , : , :
7	instantiation	23, 14, 13	⊢
	: , : , :
8	instantiation	23, 14, 15	⊢
	: , : , :
9	theorem		⊢
	proveit.numbers.numerals.decimals.add_1_2
10	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq
11	assumption		⊢
12	instantiation	23, 17, 16	⊢
	: , : , :
13	instantiation	23, 17, 18	⊢
	: , : , :
14	theorem		⊢
	proveit.numbers.number_sets.complex_numbers.real_within_complex
15	assumption		⊢
16	instantiation	23, 20, 19	⊢
	: , : , :
17	theorem		⊢
	proveit.numbers.number_sets.real_numbers.rational_within_real
18	instantiation	23, 20, 21	⊢
	: , : , :
19	instantiation	23, 24, 22	⊢
	: , : , :
20	theorem		⊢
	proveit.numbers.number_sets.rational_numbers.int_within_rational
21	instantiation	23, 24, 25	⊢
	: , : , :
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_within_int
25	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
*equality replacement requirements